If 20% of a group are harassers (evenly across genders), & the group has more men than women… then each woman gets 16x more bad experiences than each man.

The Petrie Multiplier: in a group where x% are bullies/harassers, the minority will feel it (x/100)^2 more.

This blog post has stuck with me through the years. I like the maths in it, & I like the conclusion that attacking sexism/racism etc doesn't have to be an attack on the majority.

From @turingfan@twitter.com

blog.ian.gent/2013/10/the-petr

@hadleybeeman normally I wouldn't like the reductionist approach of reducing a very complex social problem down to a mathematical equation, but as the target group of this article is a huge fan of reductionism, fair enough :D

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