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Here's what I get by changing the initial position of one mass a tiny amount:pic.twitter.com/na1FQhKd1K
how tiny? i'm surprised that floating point error wasn't enough to induce this kind of behavior with equal masses
1e-10 (the initial setup is 1 unit wide). It does also go chaotic just from error buildup, but after a few more cycles than this (depending on time step used). Also - the masses aren't actually equal here, but 1,0.8,0.8 as given in this paper https://arxiv.org/abs/1805.07980
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