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Cake day: June 17th, 2023

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  • One day Shizuo Kakutani . . . was teaching a class at Yale. He wrote down a lemma on the blackboard and announced that the proof was obvious. One student timidly raised his hand and said that it wasn’t obvious to him. Could Kakutani explain? After several moments’ thought, Kakutani realized that he could not himself prove the lemma. He apologized, and said that he would report back at their next class meeting.

    After class, Kakutani went straight to his office. He labored for quite a time and found that he could not prove the pesky lemma. He skipped lunch and went to the library to track down the lemma. After much work, he finally found the original paper. The lemma was stated clearly and succinctly. For the proof, the author had written, “Exercise for the reader.” The author of this 1941 paper was Kakutani.







  • the price difference and, well, its plasticity is unparalleled

    nothing else comes even close within several orders of magnitude. the other options listed ITT are complete jokes. you think goods are expensive now because of a few points of inflation? imagine paying a few dollars extra for thick and heavy glass bottles for everything or fancy custom made seaweed mushroom compounds instead of medical grade sterile plastic wrap that costs 2c per football field