Eli5: How is it that some gifted minded folk on the autism spectrum can tell you which exact day it was on any given date?

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I have heard about this and it baffles me. What is at play here ..maths? Or some kinda magic? Anyone being able to do this is astounding.

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2 Answers

Anonymous 0 Comments

Dates repeat. A year can start on any of the seven days, and it can be a leap year or not, which means there are 14 possible calendars. There is an algorithm, called the doomsday algorithm, that lets you easily compute the day of the week from a date and year. The impressive l part is doing it in your head, quickly.

Anonymous 0 Comments

So one of the effects of autism is called hyper focusing. The brain will just kind of latch on to something and not let go. It’s like having a song stuck in your head just more intense and longer. Just like a song may seem complicated at first if you listen to it repeatedly enough times you’ll know every lyric and every note. Most songs are actually more complicated than the pattern dates follow the only difference is most people’s brains don’t devote to understanding this particular pattern with the same intensity they would a catchy song.