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>> No.9184684 [View]
File: 202 KB, 848x566, 170307100356_1_900x600.jpg [View same] [iqdb] [saucenao] [google]
9184684

https://mathoverflow.net/questions/281447/mathematical-games-for-5-years-old-children-which-would-be-interesting-for-both
>It can also happen that the kid's definition of blue includes what you would call purple
>It doesn't help that they keep being told blueberries are blue.
come on now, blueberries are blue aren't they? maybe there are different varieties or someshit but would you seriously call pic related purple?

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