Erik Persson

Liv är ett centralt begrepp inom många forskningsområden, exempelvis inom biologi, astrobiologi, kemi och medicin, såväl som inom juridik, teologi och filosofi. Liv är också ett centralt tema i konsten. Det behandlas och begrundas i åtskilliga konstverk, i dikt, roman och film. Hur vi skall förstå, värdera och skydda livet, är oerhört fundamentala frågor. I framtiden kommer dessa frågor att bli än svårare och om möjligt ännu viktigare. Forskargrupper från hela världen arbetar idag med att skapa liv i laboratoriet, leta efter liv i rymden och förse maskiner med egenskaper som tidigare bara har varit förunnade levande varelser, och utvecklingen går fort. Det är viktigt att vi samtidigt funderar över de utmaningar som detta innebär. Det kommer att ta tid att hitta sätt att leva i en värld där liv finns i former vi idag knappt kan föreställa oss och där gränsen mellan levande varelser och maskiner blir alltmer suddig. De beslut vi fattar idag kommer också att påverka utvecklingen inom samhälle, forskning och utveckling under lång tid framöver. Den här boken är ett resultat av ett tvärvetenskapligt projekt vid Pufendorfinstitutet, Lunds universitet. Tolv forskare från lika många discipliner har ingått i projektet. Syftet har varit att belysa utmaningar som följer med utomjordiskt, artificiellt och syntetiskt liv. Det tvärvetenskapliga angreppssättet har gett oss möjlighet att belysa frågorna från alla upptänkliga vinklar, men också att hitta helt nya kombinationer av metoder och synsätt. Med tanke på livets mångsidighet och stora betydelse ur så många olika perspektiv, har detta grepp varit helt nödvändigt. Vår förhoppning är att boken skall inspirera till nya tankar och diskussioner om liv. Boken vänder sig både till de som redan är intresserade och de som ännu inte har börjat fundera kring de utmaningar som utomjordiskt, artificiellt och syntetiskt liv innebär.

The Precautionary Principle is both celebrated and criticized. It has become an important principle for decision making, but it is also subject to criticism. One problem that is often pointed out with the principle is that is not clear what it actually says and how to use it. I have taken on this problem by performing an analysis of some of the most influential formulations of the principle in an attempt to identify the core ideas behind it, with the purpose of producing a formulation of the principle that is clear and practically applicable. It was found that what is called the Precautionary Principle is not a principle that tells us what do to achieve extra precaution or how to handle situations when extra precaution is called for. Instead, it was found to be a list of circumstances that each justify extra precaution. An analysis of some of the most common and influential formulations of the Precautionary Principle identified four such circumstances: (1) When we deal with important values that tend to be systematically downplayed by traditional decision methods – such as human health and the environment. (2) When we suspect that the decision might lead to irreversible and severe consequences and the values at stake are also irreplaceable, (3) When timing is at least as important as being right. (4) When it is more important to avoid false negatives than false positives. This interpretation of the Precautionary Principle does not say anything about what kind of actions to take when extra precaution is called for, but it does provide a clear and practically useful list of circumstances that call for extra precaution and that is not subject to the most common objections to the Precautionary Principle.

If we find life on another world, it will be an extremely important discovery and we will have to take great care not to do anything that might endanger that life. If the life we find is sentient we will have moral obligations to that life. Whether it is sentient or not, we have a duty to ourselves to preserve it as a study object, and also because it would be commonly seen as valuable in its own right. In addition to this we would also have a duty to our fellow humans and other earthly life forms not to expose them to danger by advertently or inadvertently exposing them to potentially harmful space organisms. When space exploration turns into exploitation it will therefore be important to be able to show that a world that is up for exploitation is uninhabited before the exploitation starts. Showing that a world is uninhabited is, however, a different kind of task than showing that it is inhabited. The latter task can be accomplished through one positive finding but it is not clear how to go about the former task. In this paper I suggest that it is a gradual process asymptotically approaching certainty rather than a discovery in the traditional sense of the word. It has to be handled in two steps. The first is to connect degree of certainty with research setup. The second is to decide how certain we need to be. The first step is about the number, diversity and quality of observations. The second step is a decision we have to make based on the purpose of the investigation. The purpose and therefore the degree of certainty needed to establish that a world is uninhabited will be different for a world that is up for exploitation than for a world that is not. In the latter case it is only a matter of epistemic values. In the former case also ethical values have to be considered.

If we eventually discover extraterrestrial life, do we have any moral obligations for how to treat the life-forms we find; does it matter whether they are intelligent, sentient, or just microbial—and does it matter that they are extraterrestrial? In this paper, I examine these questions by looking at two of the basic questions in moral philosophy: What does it take to be a moral object? and What has value of what kind? I will start with the first of these questions by looking at the most important attempts to answer this question on our own planet and by asking whether and how they could be applied to extraterrestrial life. The results range from a very strong protection of all extraterrestrial life and all extraterrestrial environments, whether inhabited or not, to total exclusion of extraterrestrial life. Subsequently, I also examine whether extraterrestrial life that lacks moral status can have value to human or alien life with moral status, and if that could generate any obligations for how to treat extraterrestrial life. Based on this analysis, I conclude that extraterrestrial life-forms can have both instrumental value and end value to moral objects, which has strong implications for how to treat them.

Uncertainty, insufficient information or information of poor quality, limited cognitive capacity and time, along with value conflicts and ethical considerations, are all aspects thatmake risk managementand riskcommunication difficult. This paper provides a review of different risk concepts and describes how these influence risk management, communication and planning in relation to forest ecosystem services. Based on the review and results of empirical studies, we suggest that personal assessment of risk is decisive in the management of forest ecosystem services. The results are used together with a reviewof different principles of the distribution of risk to propose an approach to risk communication that is effective aswell as ethically sound. Knowledge of heuristics and mutual information on both beliefs and desires are important in the proposed risk communication approach. Such knowledge provides an opportunity for relevant information exchange, so that gaps in personal knowledge maps can be filled in and effective risk communication can be promoted.

The aim of the Nordic Network for the Archaeology and Archaeobotany of Gardening (NTAA), as it was phrased those first days in Alnarp in the beginning of March 2010, is to: ”bring researchers together from different disciplines to discuss the history, archaeology, archaeobotany and cultivation of gardens and plants”. We had no idea, then, how widely appreciated this initiative would become. The fifth seminar in five years was held on Visingsö June 1-3, 2014 and the sixth seminar will take place in Kristiansand, Norway, June 12-14, 2015. We are very pleased to be able to publish this report, Sources to the History of Gardening: Four Interdisciplinary Seminars 2010–2013, Arranged By the Nordic Network for the Archaeology and Archaeobotany of Gardening (NTAA), based on the first four themes and seminars, in total 26 articles. Most of them origins from one of the seminar contributions 2010, 2011, 2012 and 2013 respectively. However, the editorial group has taken the opportunity, with the aim of the network in mind, to add supplementing contributions on some subjects. The articles are arranged in four themes according to the themes of the seminars. The first theme Archaeological Sources to the History of Gardens and the Cultural Landscape is linked to the first seminar in Alnarp, Sweden, 2010 which had a focus on method, the important connections between archaeology and archaeobotany and the interesting progress within garden archaeology during the last decade. The second theme Cabbage Patches and Kitchen Gardens deals with the second seminar in Norrköping, Sweden, 2011. Its focus was on historical, cultural geographical, archaeological and archaeobotanical research concerning utility gardens or kitchen gardens as well as the concept ‘kålgård’ (cabbage patch or kale yard), its shape and content over time. The third theme Cultural and Garden plants: Under Ground, Above Ground, In Herbariums and Archives connects to the third seminar in Uppsala, Sweden, 2012. It focused on sources, source criticism and interdisciplinary research to gain knowledge on the history of garden cultivation and cultural plants. The articles discuss, among other things, herbariums, written sources, DNA and molecular markers, pollen analysis and georadar. The fourth theme for NTAA’s annual seminar was Cultural Relict Plants and was held on Bornholm, Denmark, 2013. The focus on the seminar was on research and conservation of cultural relict plants, that is cultural plants which have survived in the same place for a long time after the actual cultivation has ceased. We dedicate this report to Kjell Lundquist (1955-2011) who were one of the initiators to this network and we hope it will inspire continuous research and new methodological discussions.

The term ’risk’ is used in a wide range of situations, but there is no real consensus of what it means. ‘Risk ‘is often stipulatively defined as “a probability for the occurrence of a negative event” or something similar. This formulation is however not very informative, and it fails to capture many of our intuitions about the concept or risk. One way of trying to find a common definition of a term within a group is to use a Socratic Dialogue (SD). This method is fairly new, and it is rather different from the original Socratic dialogues (at least if we are to judge from how they are described by Plato). The best explanation for the name ought to be that it is inspired by the original Socratic dialogues. The SD in its modern form was originally developed as a tool for enabling laymen to perform rather advanced concept analyses under the supervision of a professional philosopher. The formal goal of the method is to find a common way of perceiving of a particular term, or at least to find out exactly how the members of the group differ in their understandings of the term, and why. The largest gain from the process has in practice turned out to be a higher awareness among the participants of different ways of understanding the term, and the ideas and intuitions behind it. This has turned out to be very useful in educational settings, but the method has also been used with great success both in research, and in e.g. business, public administration and nongovernmental organisations. In the present case, a Socratic dialogue on the concept of risk was performed within the framework of a Ph D-course about risk and uncertainty at the Swedish University of Agriculture in Alnarp, Sweden. The participants on the course where all quite familiar with practical issues relating to risks. Both from the course work, and from their own research.

The book contains the first part of an investigation aimed at finding out why it is morally wrong to cause species to go extinct. That it is morally wrong seems to be a very basic and widely held intuition. It seems reasonable that a moral theory worth taking seriously ought to be able to account for that intuition. The most common attempt to answer our question is to refer to the instrumental value of the species for human beings – the anthropocentric instrumental approach as I have chosen to call it. This is the answer that is discussed in this book. We have found many ways in which different species have instrumental value for human beings – both individually and as a part of ecosystems and of biodiversity in general. We could not guarantee however that this includes all species. In some cases, it also turned out that the instrumental value of the species in fact favours exploitation maybe even as far to the extinction of the species. We also noticed that there is no guarantee that the instrumental value of the species can always outweigh the competing values that we would gain by different encroachments that contribute to the extinction of the species. We found however that there are some special circumstances that help push the scale in the direction of preservation. I am thinking of some particular types of value such as choice value and transformation value – values that in general seem to favour preservation of species. This principle shows us that it would be rational from an anthropocentric instrumental vantage point to rule in favour of preservation in many of the cases where we are uncertain about the value of the species, about the best way of utilising the value, or about the connection between the species and other species or biodiversity in general. I am finally thinking of the moral principle that we have duties to consider the future interests of generations to come. We found that with a few exceptions it is justified to adopt such a principle. This in combination with the principles of precaution ought in general to urge us not to cause the extinction of species unless we have very trustworthy evidence that they will not turn out to be more valuable alive to future generations in comparison to what we can get from driving them to extinction. In relation to the discussion about the value of other species for human beings, it is worth noticing that all the arguments we have found in favour of preservation would be even stronger – and therefore account even better for the intuition that it is at least prima facie wrong to cause extinction – if we also accepted that other entities than human beings can have moral standing. Finally, we noticed that our moral intuitions strongly indicate that even in the cases where the instrumental value of other species for human beings talks in favour of preservation, there is still something lacking. Something we have to account for in order to totally account for our moral intuition against extinction. The conclusion will have to be that anthropocentric instrumentalism is in favour of preservation in many cases – probably in more cases than is generally acknowledged – but that it is not enough to give a complete account of the intuition that it is prima facie morally wrong to contribute to the extinction of species. We therefore have to continue our search for such an account

För att kunna känna igen liv när vi hittar det och för att veta hur vi skall leta behöver vi ha en uppfattning om vad liv är. Att försöka konstruera en definition av liv hjälper oss också att formulera våra tankar kring vad liv är. De flesta av oss har nog en intuitiv uppfattning av vad liv är, och kan i de flesta situationer utan problem skilja ut vad som är levande från vad som inte är det. Det finns dock situationer när det inte är fullt så enkelt. Man är till exempel inte överens om huruvida virus är liv. Virus kan föröka sig och genomgår evolution men de har ingen egen metabolism vilket många hävdar är en nödvändig egenskap för att vara levande. Numera finns det också datorprogram som har vissa egenskaper gemensamma med sådant som vi normalt kallar liv. De kan till exempel föröka sig och genomgå en slags evolution. Däremot är de inte uppbyggda av DNA, och dessutom är de ju tillverkade av oss. Trots detta finns det de som vill hävda att datorprogram kan vara levande. Å andra sidan finns det desto fler som förnekar det. Många förnekar också att levande datorprogram alls är möjligt. De som gör det kan till exempel hävda att liv måste ha en viss form av kemisk bas eller vara ett resultat av naturligt urval i motsats till urval baserat på regler som vi människor har konstruerat. När man diskuterar utomjordiskt liv så blir det ofta ännu svårare att avgöra vad som är levande än när vi diskuterar liv här på jorden. Utomjordiskt liv kommer förmodligen att vara väldigt olikt det vi normalt kallar liv men någonting bör det ju ha gemensamt med livet på jorden för att det skall vara befogat att använda beteckningen liv om båda. När man letar efter liv i extrema miljöer här på jorden, och i ännu högre grad när man letar efter liv på andra himlakroppar, är det av avgörande betydelse att man har någon slags uppfattning om vad liv är. Det finns framför allt två skäl till det. Det ena är att man behöver kunna avgöra om det man hittar är liv. Det andra är att vi behöver bestämma oss för hur och var vi skall leta (resurserna för att leta efter liv är ju inte obegränsade). Man behöver till exempel välja rätt slags instrument som reagerar på rätt saker. För att kunna göra det behöver man veta vilka egenskaper man skall leta efter, det vill säga man behöver veta vad liv är.

When the time comes to decide how to govern an extraterrestrial settlement there will be many alternatives to chose from. We will have the opportunity to try new and so far untested theories, but there are also some old forms of government that might be tempting to try again. We might for instance let the company whose activities on the world are the reason for the establishment govern the settlement. This has been tried before on our own planet both because it was seen as convenient and as an incentive for colonisation. In this chapter I will ask what this solution would mean for the civil liberty of the settlers. To answer the question I will look at some historical analogues and have a philosophical discussion. The conclusion is that a settlement governed by a body whose sole reason for existence is to make money for the owners, that is led by a board that answers only to the owners and not to the people, that functions as both government and sole employer, and that has the unlimited power over the life support systems necessary for the survival of the settlers will not be a good basis for civil liberties.

Human beings have wondered about the stars since the dawn of the species. Does life exist out there – intelligent life, even – or are we alone? The quest for life in the universe touches on fundamental hopes and fears. It touches on the essence of what it means to formulate a theory, grasp a concept, and have an imagination. This book traces the history of the science of this area and the development of new schools in philosophy. Its essays seek to establish the history and philosophy of astrobiology as research fields in their own right by addressing cognitive, linguistic, epistemological, ethical, cultural, societal, and historical perspectives on astrobiology.

When working with garden archaeology and garden archaeobotany, the plant material is of great importance. It is important to be able to identify which plants have grown in a particular garden and which have not, which of the plants you find in the garden today that are newly introduced or have established themselves on their own, and which plants that may be remnants of earlier cultivation. During the past two years, my colleagues and I have been involved in a project that deals with the latter kind of plants, that is, plants that were once actively cultivated and that have survived in their original place of cultivation until the present time(Persson, Ansebo & Solberg, this volume). When we started the project we simply called the plants we worked with ‘relict plants’. This is also the term that has been used unofficially in this field of research for some time. It was in no way an official term, however, and as it turned out, the term already had a different meaning in botany that was both older and better established. We were therefore in need of a better name for the plants we worked with. To single out the plants we were working with, we used the following working definition: “Plants that were once, but are no longer cultivated in a certain area, and where a part of the population still exists even though it is no longer actively maintained”. Although we still think this is a decent approximation, we have realized that there are several complicating factors we have had to think more about. We thus needed both a better name and a better definition. Both these tasks became important parts of the project.

Hur bör vi bete oss mot livsformer som är väldigt annorlunda än vi? Spelar det någon roll att de är annorlunda? Spelar det någon roll hur annorlunda? Etiken sysslar med många olika frågor som alla har att göra med hur vi bör hantera det faktum att det vi gör (eller inte gör) påverkar andra än oss själv. En fråga för etiken gäller vad som gör en handling rätt. Är det till exempel effekterna av handlingen, avsikten med handlingen, eller ligger det i själva handlingen som sådan? En annan fråga för etiken är vad som har värde och ytterligare en är vilka olika slags värden det finns. Den fråga vi framför allt skall ägna oss åt här har att göra med vem man behöver ta etisk hänsyn till när man handlar eller fattar beslut, och varför. Man brukar fråga: ”Vad krävs för att vara ett moraliskt objekt” eller ”vad krävs för att ha moralisk status”? Det är två olika sätt att ställa samma fråga. I vårt fall skall vi försöka ta reda på om extrema livsformer kan ha moralisk status, det vill säga om vi måste ta hänsyn till dem när vi handlar eller fattar beslut som påverkar dem.

The concept of ecosystem services is a way of visualizing the instrumental value that nature has for human beings. Most ecosystem services can be performed by more than one species. This fact is sometimes used as an argument against the preservation of species. However, even though substitutability does detract from the instrumental value of a species, it also adds option value to it. The option value cannot make a substitutable species as instrumentally valuable as a non-substitutable species, but in many cases, it can add enough value to make the species more valuable than the projects that threaten its existence.

Sokrates var inte bara en filosofisk nydanare. Genom sitt sätt att involvera sina samtalspartners i den filosofiska processen var han också i hög utsträckning en pedagogisk nydanare. Hans pedagogiska grundidé var den så kallade majeutiska metoden – det vill säga ”barnmorskemetoden”. Med det menade han att han inte överförde sina egna färdiga tankar till den han talade med utan han hjälpte sin samtalspartner att föda sina egna tankar. Inom pedagogiken är det vanligt att använda den så kallade ”Sokratiska metoden” vilket i sin enklaste form bara innebär att man ställer frågor till studenterna. Den här artikeln kommer emellertid att handla om en mer sofistikerad metod som används för begreppsanalys/begreppsdefinition i grupp. Metoden är inspirerad av Sokrates men skiljer sig också en del från hur Sokrates själv grep sig an sina dialoger – åtminstone så som de beskrivs av Platon. Artikeln innehåller en kort historisk och pedagogisk bakgrund men syftar framför allt till att utgöra en praktisk vägledning för genomförande av sokratiska dialoger i filosofiundervisningen. Artikeln bygger framför allt på mina egna erfarenheter av att använda Sokratisk Dialog i undervisningen vid Filosofiska institutionen vid Lunds universitet, Lunds Tekniska Högskola, Sveriges Lantbruksuniversitet och i det privata näringslivet. Artikeln vänder sig till alla som undervisar i filosofi på universitetet eller gymnasiet eller i filosofiska metoder för studenter vid andra utbildningar, t.ex. värdeteori, vetenskapsteori eller tillämpad etik för ingenjörer eller medicinare – eller i vilket annat ämne som helst där det förekommer begrepp som saknar en enkel och knivskarp definition men som är viktiga för ämnet.

Wind damage to forests can be divided into (1) the direct damage done to the forest and(2) indirect effects. Indirect effects may be of different kinds and may affect the environ- ment as well as society. For example, falling trees can lead to power and telecommunica- tion failures or blocking of roads. The salvage harvest of fallen trees is another example and one that involves extremely dangerous work. In this overview we provide examples of different entities, services, and activities that may be affected by wind damage to for- ests. We illustrate how valuation of the damage depends on the perspective applied and how the affected entities, services, and activities may represent different types of values. Finally we suggest means for how to actively manage the risk in an ethically sustainable way. Many of our examples will be drawn from the experiences of the wind damage Gudrun in southern Sweden on 8–9 January 2005. The direct as well as indirect effects, which are described, are by no means unique to the Gudrun wind damage event and similar or even worse effects have been described after the wind damage events Martin and Lothar in 1999, and Klaus in 2009.

The aim of this investigation is to answer the question of why it is prima facie morally wrong to cause or contribute to the extinction of species. The first potential answer investigated in the book is that other species are instrumentally valuable for human beings. The results of this part of the investigation are that many species are instrumentally valuable for human beings but that not all species are equally valuable in all cases. The instrumental values of different species also have to compete with other human values. Sometimes these other values probably outweigh the value of the continued existence of the species. In general the degree of uncertainty is very high and the precautionaty principle is recommended to deal with these uncertainties. We also found that we have a duty to consider the interests of future generations of human beings and that these duties, in general, speak in favour of preservation. Anthropocentric instrumentalism therefore provides us with rather strong reasons to consider many cases of human caused extinction as prima facie morally wrong. Even so, anthropocentric instrumentalism does not fully account for the moral intuition we set out to investigate. The next potential answer that is investigated in the book is that species have a moral standing in their own right. The result of this part of the investigation is that this idea is highly unlikely, in particular because species cannot have any interests to consider. Anotgher potential answer is that species have intrinsic value in some other meaning that does not imply moral standing. We concluded that it is possible to be subjectively valued as an end and that many species have properties that make them highly suitable for being valued as ends by human beings. Finally, we found that our contributions to the extinction of species in most cases frustrate the interests of many non-human sentient beings. This is true if the species in question is made up of sentient individuals, and it is also true when the species in question is made up of non-sentient individuals that have instrumental value for sentient individuals of other species. There are exceptions to this rule, but all in all it seems that the inclusion of non-human sentient individuals together with us humans as moral objects, in most cases, tip the scale drastically in favour of preservation. The main result of the investigation is that there is not one but several explanations to why it is prima facie morally wrong to contribute to the extinction of species – and all of them are about duties to respect the interests of individual sentient animals, including human beings.

During antiquity, the astronomical questions of the day and the methods used to formulate and answer them were clearly within the realm of philosophy. That changed most notably in the sixteenth century when Tycho Brahe turned astronomy into a modern empirical science by formulating (in principle) testable hypotheses, figuring out how to test them, building the proper instruments, and making – for that time – very accurate and systematic observations of the sky. These observations eventually led to the modern view of the solar system and ultimately the rejection of the classical Aristotelian worldview. Since then, the exploration of space has been located clearly in the realm of natural science – and, to an increasing extent, technology. In parallel to that, space has – at least since World War II –to a high degree been a place for military and political ambitions and activities. The scientists that have been involved in space exploration have mainly been physicists, together with some chemists and geologists. Lately, the exploration of space has engaged more and more biologists in the search for extraterrestrial life. The international space station, along with plans to send humans to Mars, has led to an increased involvement of medical science. If present speculations about space tourism and mining on planets, moons, and asteroids hold true, in the future we will probably see many new professions dealing not just with exploration, but also exploitation of space. Philosophy has never totally left the realm of space exploration. As space exploration and exploitation become more and more interdisciplinary, and as space becomes a bigger part of our lives, it will be time once more for philosophy to turn its attention towards space. The mission for philosophers is not to indulge in speculations over questions that are better dealt with by empirical methods. Ther are, however, several questions connected to the exploration and exploitation of space that are of a philosophical nature and that deserve to be examined seriously from a philosophical perspective. I believe that philosophical scrutiny of these questions will be to the benefit of both space exploration and philosophy. Interesting and, indeed, important philosophical questions arise in many areas of space exploration. Some of the most interesting and important ones relate to the search for extraterrestrial life, of which some will be presented here. I will not attempt to answer these questions here. Instead, this chapter should be seen as an introduction to some of the philosophical questions raised by astrobiology.