Open thread, Oct. 27 - Nov. 2, 2014

MrMind

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If it's worth saying, but not worth its own post (even in Discussion), then it goes here.

Notes for future OT posters:

1. Please add the 'open_thread' tag.

2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)

3. Open Threads should be posted in Discussion, and not Main.

4. Open Threads should start on Monday, and end on Sunday.

I can't do real division in my head, but if I wanted to maximise my logarithm-ability while minimizing my number of cards, I would go for logs base (probably 10) of primes, and 1/log(e) and 1/log(2).

But I'm not too fussed about minimizing cards, or about natural logs. Learning more primes might be helpful, but I can get them approximately. E.g. I don't have log_10(11) memorized, but I know it's between log_10(10) and log_10(2*6) which are 1 and 1.08, and it would be closer to the latter (my calculator says 1.041, which is slightly lower than I would have guessed, but if I put it in Anki I'd only go to 1.04 anyway).