This a special issue on philosophy of logic, addressing a variety of topics like the grammar of first-order logic and the axiomatization of evolutionary biology.

Abstract. The strong similarity between the use of ostension and that of a simple demonstrative to predicate something of an object seems to conflict with equally strong intuitions according to which, while “this” does usually refer to an object, the gesture of holding an object in your hand and showing it to an audience does not refer to the demonstrated object. This paper argues that the problem is authentic and provides a solution to it. In doing so, a more general (...) thought is given support by the approach used. Namely, the thought that our abilities to directly refer to things require some basic referential abilities exhibited in ostension and the use of demonstratives which, in their turn, rest upon our abilities to cooperate in performing non-communicative actions on our environment. Several concepts introduced in order to solve the initial problem can be used to articulate this thought in more detail. (shrink)

The aim of this paper is to suggest a new interpretation to the Gettier problem by showing that the standard JTB definition of knowledge is not epistemologically incomplete, being at the same time formally incomplete. The Gettier problem is shown to emerge through the implicit self-application of the JTB definition of knowledge to prove its own incompleteness. A conclusion is drawn, which runs counter to the traditional view that the problem necessarily requires a conceptual amendment of the standard defi nition, (...) in spite of the formal incompleteness of the latter. The Gettier problem is construed to be related to the ancient Meno problem within a contemporary justifi cational discourse. (shrink)

Wittgenstein’s Private Language Argument was received within the Pittsburgh School of Philosophy as raising new and interesting difficulties for the traditional empiricist model of knowledge justification. While McDowell’s attempt to solve the difficulties in question is still debated, I claim that a different solution to the same difficulties might have been suggested by Wittgenstein himself in On Certainty.

The paper contains a conceptual proposal, its key idea being that the successful functioning of a rule embedding artifact designed to regulate a practice (not pertaining to its use) produces the same result as the successful performance of the rule-invoking non-communicative actions belonging to the practice in case.

INTRODUCTION Building upon the "preliminary conception of Phenomenology" introduced by Heidegger in Section II of the Introduction to Sein und Zeit,1 one ...

My aims here are, firstly, to suggest a minor amendment to R. I. G. Hughes’ DDI account of modeling, so that it could be viewed as a plausible epistemological “model” of how scientific models represent and secondly, to distinguish between two epistemological kinds of models that I call “descriptive” and “constitutive”. This aim is achieved by criticizing Michael Weisberg’s distinction between models and abstract direct representations and by following, at the same time, his own methodological approach for such a distinction.

Utilizes Heidegger in rethinking common environmental paradigms.

Time travel is a theme that provokes scientific curiosity, as well as philosophical speculation. The problems it raises, however, are being tackled by science fiction only, and are still not resolved by science either theoretically, or practically. My aim here is, firstly, to present some curious facts about time travel and to have a look at the nature of different ontological constraints confronting time travel; secondly, to outline three cases for which time travel might be meaningfully contended; and thirdly, to (...) defend the “unexpected” claim that human conscious presence in the world is the genuine-and-natural time travel. (shrink)

This is an anthology. Each contributor discusses an aspect of Wittgenstein's philosophy considered still relevant in the context of current philosophy.