Last Updated：2025/11/29
Sentence
哲学の学生たちは、すべての男性が自分で剃るか床屋に剃られると仮定し、床屋が自分で剃らない男性だけを剃るとすると誰がその床屋を剃るのか決定できないという、自己言及の逆説である理髪師の逆説を、論理学における自己言及の問題を例示するためによく議論する。
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Philosophy students often discuss the barber paradox to illustrate the problems of self-reference in logic.
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Philosophy students often discuss the barber paradox to illustrate the problems of self-reference in logic.
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Related words
barber paradox
Proper noun
Japanese Meaning
自己言及に基づく矛盾を示す逆説。すなわち、すべての男は自分で髭を剃るか、理髪師に髭を剃ってもらうとし、理髪師は自分自身で髭を剃らない男だけを剃ると仮定した場合、理髪師自身は自分で髭を剃るべきかどうかで矛盾が生じる現象を指す。
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