My peoples, the time has come for a MEGATHREAD.

In 40 tweets I will explain another 40 concepts you should know.

Strap in. Here we go:

Abstraction: There are scales of explanation. A human can be considered a person, mammal, collection of cells, collection of stardust. Sometimes the reason people can't see eye to eye is that they're unwittingly considering things at different levels of abstraction.

Scope Neglect: We evolved for the small scale of tribal life, so we can't comprehend the big numbers that recently entered human life. We can appreciate the difference between 50 and 100, but not a million and a billion. It's why we often treat geopolitics like family politics.

The Law of Very Large Numbers: Given a wide enough dataset, any pattern can be observed. A million to one odds happen 8 times a day in NYC (population 8 million). The world hasn't become crazier, we're just seeing more of everything.

Benford's Law: Numbers in natural sets of data are not uniformly distributed (e.g. 30% of numbers have 1 as their first digit). Used by the IRS and other tax agencies to determine if you've lied about your finances.