A topological model of elementary semiotic schemes is presented. Implications are discussed with respect to the establishment of abstract terms and the search for ultimate meaning.

Can science contribute to the human quest for meaning in this world? At the 4th biennial meeting of the International Society for the Study of Human Ideas on Ultimate Reality and Meaning, this question was submitted to four scientists and philosophers. Their answers and reflections are discussed.

Proceeding from serendipitous observations, three studies and two pilot experiments examined how the way mental representations are conceived varies as the subjective status of the representations is manifest or otherwise. Participants were found to produce simple line drawings differently when the drawings were assumed to represent mental contents (beliefs, imaginations, percepts). The results challenged particular lay epistemological concepts. They were partly accounted for by Gricean conversational rules, but a "subjective status bias" was postulated to have them fully explained. The discussion (...) and recommendations for research--completed with two pilot studies--center on the nature of this bias relating it either to a tendency to conceive subjective representations as vague "shadows of reality", or to a tendency to have an increased impact of the law of pregnance. The empirical outcomes of the pilot studies argue for the latter tendency. (shrink)

Discussing ideas from Husserl's 'Vom Ursprung der Geometrie' and the author's research on human information processing, it is suggested that there may be two relatively independent modes of knowledge. They are tentatively referred to as 'experience' and 'reason'. They constitute an epistemological dualism that may enable to avoid certain circularities in the foundation of knowledge and that may provide an avenue towards the integration of scientific and preschientific (phenomenological) knowledge. This duality involves two horizons advanced yet bu Husserl, but we (...) do not know whether he went so far as to connect them with two modes of knowledge of which the one has a meta-status relative to the other making that it can found as well as relativate the other. Finally, having an infinite character, both horizons may offer distinct perspectives on ultimate reality and meaning. (shrink)