Are these circles moving? Mark Frauenfelder 12:39 pm Tue, Dec 1, 2020 See more矢印の方向に動いて見えますね~?人間の脳は単純なので矢印で惑わされてしまうのでーす pic.twitter.com/lUPySup2du— じゃがりきん (@jagarikin) November 25, 2020The circles are rotating, to be sure, but are they moving in the direction of the arrows? (Via Core 77)