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    Keizo Matsubara (2015). A Defence of String Theory. [REVIEW] Metascience 24 (2):189-194.
    String theory has been very influential within theoretical physics for the past few decades. It is the most popular attempt to solve the problem of formulating a viable theory of quantum gravity. Furthermore, it also unifies the other fundamental forces within one theoretical framework. In string theory, it is assumed that what before was thought to be point particles should really be seen as one-dimensional extended entities, i.e. strings. Different particles are supposed to correspond to various vibrational patterns of the (...)
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  2. Lars-Göran Johansson & Keizo Matsubara (2011). String Theory and General Methodology: A Mutual Evaluation. Studies in History and Philosophy of Science Part B 42 (3):199-210.
    String theory has been the dominating research field in theoretical physics during the last decades. Despite the considerable time elapse, no new testable predictions have been derived by string theorists and it is understandable that doubts have been voiced. Some people have argued that it is time to give up since testability is wanting. But the majority has not been convinced and they continue to believe that string theory is the right way to go. This situation is interesting for philosophy (...)
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    Keizo Matsubara (2013). Realism, Underdetermination and String Theory Dualities. Synthese 190 (3):471-489.
    String theory promises to be able to provide us with a working theory of quantum gravity and a unified description of all fundamental forces. In string theory there are so called ‘dualities’; i.e. different theoretical formulations that are physically equivalent. In this article these dualities are investigated from a philosophical point of view. Semantic and epistemic questions relating to the problem of underdetermination of theories by data and the debate on realism concerning scientific theories are discussed. Depending on ones views (...)
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