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Visual «proofs» are dangerous. Counter-example: Missing square puzzle: https://en.wikipedia.org/wiki/Missing_square_puzzle https://en.wikipedia.org/wiki/Missing
by _nalply 10y ago
Visual «proofs» are dangerous. Counter-example: Missing square puzzle: https://en.wikipedia.org/wiki/Missing_square_puzzle https://en.wikipedia.org/wiki/Missing_square_puzzle
- squidfood 10y agoFor real-numbered measurements, dangerous. For integer measurements that are about seeing the counting re-arrangements, safer.
- _nalply 10y agoAgreed. But this is an awfully fine point for proofs which are intended to be «simple».
- est 10y agoThink deeper. You can categorize proofs in to two sets, one is safe in visual and one is not.