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Welcome to R slash Ask Reddit where people answer the question. What's the creepiest display of

intelligence you've seen by another human?

Our first replies from the Raith Kills.

I knew a guy who worked retail and was able to memorize customer credit card numbers.

He used them to buy adult content.

Our next reply is from Send Me Nudes, though.

A friend once showed me his guidebook to how to handle his girlfriend.

He'd taken notes on her likes and dislikes, what he'd given her, and precisely how she responded.

Which actions caused which responses in her, what phrases he could quote at her to yield particular responses, etc.

And then sort of use the information he'd collected to write a little guide to expected outcomes of various things that he does, so that he could diffuse her if she got mad at him.

If she felt unloved, he had strategies for fixing the situation so he could go back to doing

whatever he likes while she gets off his back.

If X, then Y will likely yield Z, unless P. It was somewhere between

oddly sweet and creepily manipulative. Beneath that, Perurium says exactly what I was thinking,

which is, what brand of autism is this? I don't read this as malice or he's intentionally

trying to manipulate her.

I think this is just how this guy understands the world and makes sense of it.

...