Haig Khatchadourian

In order to determine what are the metaphysical presuppositions of science, we have to first define the terms ‘presupposition’ and ‘metaphysics’ or ‘metaphysical’. We shall begin with the former.Arthur Pap in his article Does Science Have Metaphysical Presuppositions? discusses two senses of the term. A presupposition may be a necessary condition: p presupposes q, dt = p implies q, i.e. not-g implies not-p. a premise or a rule of inference used in deriving a belief. Thus in this sense, p presupposes q means that if q were false, then the belief in p would cease to be grounded.

ABSTRACT The paper addresses the fundamental issue of the morality of terrorism. It distinguishes four types of terrorism—‘predatory,’‘retaliatory,’‘political’and ‘moralistic’—and argues that in all of them terrorism (in a ‘descriptive,’value‐neutral sense of the word) is always wrong. After a short introductory section the paper considers in some detail the conceptual problem of defining ‘terrorism’. Next it considers the possible application to terrorism, with the necessary modifications, of two main conditions of a ‘just war’; viz. the Principles of Discrimination and of Proportion. It argues that these conditions support the paper's central contention. Additional support is then found in the concept and principles of human rights. In the final section the paper evaluates utilitarian arguments brought forth by Kai Nielsen in Violence and Terrorism: its uses and abuses, in support of so‐called ‘revolutionary terrorism’. Throughout the discussion is illustrated by some actual examples from the recent past.