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2010.11.21 信原幸弘, 筒井晴香, └イベント報告, 中澤栄輔, 西堤優, 科学技術と社会

2010年10月23日から29日まで,バーミンガム大学(イギリス)のリサ・ボルトロッティさん(Dr. Lisa Bortolotti)の連続講演会(計5回)をおこないました.




ボルトロッティさん(⇒ こちらのウェブサイトもご覧ください)は精神病理の哲学や心の哲学が専門.今回の連続講演会のタイトルは「Delusions and the Philosophy and Psychology of Belief」です.妄想は信念なのか,ということを論じたDelusions and Other Irrational Beliefs (Bortolotti, L. 2009. Oxford University Press).を基本としつつ,さらにそこから発展させた研究成果をボルトロッティさんは論じました.
















第5回目のレクチャーは「Delusions and Self-governance」である。その中でボルトロッティさんは、統合失調症のような幻覚や妄想を伴う精神疾患患者の責任帰属の問題について考察を行った。ボルトロッティさんは、統合失調症者が罪を犯した場合、健常者よりもその罪に対する責任を軽減することが可能であると結論付けている。その理由は、彼らが幻覚や妄想を伴っていたからではない。彼らには、道徳的または法的に許容可能な振舞いを実現させる意思決定上の機能不全があったためである。彼女の考察は大変興味深いものであり、精神疾患を伴う者への責任帰属という現実的な問題を考える上で参考になるように思われた。

また、ボルトロッティさんは、Delusion and Other Irrational Beliefsの第五章で取り上げているように、信念に対して理由付けをすることが自己知に貢献するのかどうかという問題について非常に興味深い考察を加えた。それによると、理由付けされた信念を受け入れるということは、結果的に信念の体系化をもたらし、そのような体系によってもたらされる自己知は、そのような体系なしでもたらされる自己知よりも堅固なものになる。それゆえ、ある信念に理由付けをすることは自己知に貢献するのである。ボルトロッティさんの議論は明快であり、この回も他の回と同様に活発な質疑応答がなされ、提題者にとってもすべての参加者にとっても大変有意義なものになったように思われる。最後にこの場を借りてボルトロッティさんとこのレクチャーの場に携わってくださったすべての人々にお礼申し上げたい次第である。



When I received an email from Professor Nobuhara inviting me to deliver a series of lectures at UTCP, I was delighted, because I knew that the Centre promoted the type of “applied philosophy” I like (e.g., empirically informed philosophy of mind and neuroethics), and because I treasured the opportunity to spend some time in one of my favourite cities in the whole world. In Tokyo, I soon realised, just after the first lecture, that this would be a fantastic experience from both an academic and personal point of view.

The series of lectures was entitled “Delusions and The Philosophy and Psychology of Belief”. In each of the first three meetings I presented an argument that I developed in the monograph on delusions I published in 2009 (“Delusions and Other Irrational Beliefs”, OUP) and some implications to be drawn from it. In the last two lectures I presented more recently developed arguments, about the relationship between delusions and action, and about whether people with delusions can be held responsible for the actions that are motivated by their delusions. After one hour and a bit of me talking, one or two detailed commentaries followed. I was then given a chance to respond, and a QA session took place.

It is always a pleasure to see people interested in your work, but the bright graduate students and post-doctoral researchers at UTCP exceeded my expectations. They were very knowledgeable about the topic (philosophical accounts of delusions and implications for beliefs) and provided very helpful feedback in the form of commentaries and questions. What struck me about all the commentaries, which ranged from the psychology of belief to the nature of moral responsibility, is that they were original. The authors didn’t just make comments and objections to my arguments, but put forward novel solutions to serious philosophical problems – and it was even more impressive because they only had 15 minutes to do so! They also raised questions emerging from examples I had never considered before, forcing me to think hard on the spot. As a result of this productive exchange, I started reconsidering many issues that I had set aside after completing my project on delusions, I was inspired to write about further potential implications of my view, and to clarify my position where it had been so effectively challenged.

UTCP philosophers were also incredibly friendly and hospitable, taking me to dinner in very exciting places which would have been difficult for me to visit on my own due to my total incompetence in the Japanese language (something I hope to remedy in the future). I loved the range of seasonal dishes I had the fortune to taste (among which oden and soba), and, above all, the wonderful company. Philosophical issues crept in the conversation, predictably, but we also talked about many other things, and I feel I got really close to some of the people I met. (I was also helpfully advised about what to do in my spare time in Tokyo, and warned about a looming typhoon, which was very considerate of my hosts, as I had been ignoring the news since my arrival in Tokyo, too absorbed in an intensive programme of philosophy and good food).

I found myself envying the students working at UTCP, under the leadership and care of Professor Nobuhara. They looked like a tight group, as they were cooperative and helpful to each other, and clearly had the competence, motivation, and energy to contribute substantially to the advancement of “applied philosophy” and to the profession in general. I hope to meet them again all very soon, and I am grateful to Professor Nobuhara for the opportunity to be part of the Centre for ten days or so, and to Mr Nakazawa for organising my stay and my lectures so impeccably. I have been back only a few days, and I miss UTCP already!

(Lisa Bortolotti)






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