To Aru Majutsu no Index ep. 05 & Perfect Memory
Well, after five episodes, Touma finally figured out that there’s no way Index’s brain would explode (or implode?) because she has too much stuff memorized. I admit that I didn’t think anything about Index having too much information, but that was only because this is anime.
So after watching this episode, I started wondering how much information the brain could hold. From my high school days, I learned that we only use about 10% of our brains and that geniuses still only use a maximum of 15%, but this information was for processing power rather than information storage. A search on google for brain capacity turned up results ranging from 100MB (~10^8 bytes) to 10^8432 (that’s a 1 followed by 8432 zeroes). With such a wide range of predictions, it’s obvious that no one knows how much information the brain can hold. (more…)




