The Liar-paradox in a Quantum Mechanical Perspective

In this paper we concentrate on the nature of the liar paradox asa cognitive entity; a consistently testable configuration of properties. We elaborate further on a quantum mechanical model (Aerts, Broekaert and Smets, 1999) that has been proposed to analyze the dynamics involved, and we focus on the interpretation and concomitant philosophical picture. Some conclusions we draw from our model favor an effective realistic interpretation of cognitive reality.     

World Views. Elements of the Apostelian and General Approach

In the work of the late Belgian philosopher, logician and freethinker Leo Apostel (1924–1995) the concept of ‘world view’ is extensively developed. From the diverse research of Apostel, I gather and examine the constituents of a world view and their relationships. I propose to understand it as a pluralist and open, rationalised ontology of the ‘world whole’, comprising knowledge systems, valuative ethical systems and concomitant action guiding systems, to a large extent reflecting insight in the exact sciences. The prolific and scattered opus of Apostel renders my account of encompassing world views approximate and incomplete. It merely outlines the intrinsically unfinished project and presents a recent development. This development mainly involves our approach to the phenomenon of emergence from a quantum theoretical perspective. This revised version was published online in July 2006 with corrections to the Cover Date.     

Counterfactuals and Non-locality of Quantum Mechanics: The Bedford–Stapp Version of the GHZ Theorem

In the paper, the proof of the non-locality of quantum mechanics, given by Bedford and Stapp (1995), and appealing to the GHZ example, is analyzed. The proof does not contain any explicit assumption of realism, but instead it uses formal methods and techniques of the Lewis calculus of counterfactuals. To ascertain the validity of the proof, a formal semantic model for counterfactuals is constructed. With the help of this model it can be shown that the proof is faulty, because it appeals to the unwarranted principle of “elimination of eliminated conditions” (EEC). As an additional way of showing unreasonableness of the assumption (EEC), it is argued that yet another alleged and highly controversial proof of non-locality of QM, using the Hardy example, can be made almost trivial with the help of (EEC). Finally, a general argument is produced to the effect that the locality condition in the form accepted by Stapp and Bedford is consistent with the quantum-mechanical predictions for the GHZ case under the assumption of indeterminism. This result undermines any future attempts of proving the incompatibility between the predictions of quantum theory and the idea of no faster-than-light influence in the GHZ case, quite independently of the negative assessment of the particular derivation proposed by Stapp and Bedford.     

关于世界4的悖论——一个逻辑学视角

关于世界的划分,有本体论层面,也有逻辑学层面,还有这两个层面的纠缠。纠缠形成悖论,无论是波普尔的世界3理论,还是此前的一元论、二元论,以及后来诸多形态的世界4理论,都为这种悖论所纠缠。世界的划分者主要留意的是对于世界的本体论划分,然而划分却有很深的逻辑学内涵。从世界4的话题出发,关注划分的逻辑学层面,以及本体论和逻辑学层面的微妙关系,正视、接纳和解放悖论,是本文的主旨。     

遵循科学发展规律 推动原始科技创新——中国科学技术大学量子信息科学创新案例分析

近年来,中国科学技术大学在如何遵循科学发展规律、推动原始科技创新方面取得了一些有益的经验。本文以量子信息科学创新为例,较为系统地阐述了中国科学技术大学在战略部署、人才团队建设、项目组织等方面所做的一些思考与探索。