01:830:305 Lecture Notes - Lecture 16: Concept Learning, Intension, Ludwig Wittgenstein
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Birds have feathers, penguin is bird, penguins have feathers. But when there are ways in which categories differ from superordinate category - penguins. Penguins also have feature that can"t y - birds can y so contradictory. Know the concept squirrel - can spot that they are all members of the extension category squirrel - but they are all quite different from each other. Induction and deduction: deduction is reasoning that is logically certain, induction is reasoning that is not logically certain, the conclusion seems plausible or likely given the premises. Something we feel we know for sure, we don"t actually no for sure, and we don"t actually know at all. He was introducing the distinction between induction and deduction. He shows that somethings we know we don"t know deductively - habit of reasoning. Past squirrels you"ve seen eat nuts, conclude that they like nuts.