PHL100Y1 Lecture Notes - Lecture 5: Synesthesia, A Priori And A Posteriori, Eristic
Document Summary
Many traditions and religions take up the belief that life is just an illusion of the eternal form because it exists in time. To know something is to be in touch with the eternal essence of something. e. g. a chair is participating in the form of a chair in the sky". We need to know the essence of x to know whether x can do something. Specifying the subject: pointing specifically what we"re talking about. Need to borrow other things to accomplish the task. E. g. that chair instead of just that : listing all things that fall under the subject. (not too efficient, describing in a more elaborate way to define the subject. Using words that give a number of conditions that describe what something is. Intensional definition specifies necessary and sufficient conditions for when the term should be used. e. g. an intensional definition of vertebrates is warm-blooded and viviparous animals.
