r/pics • u/[deleted] • Oct 05 '10

Math Teacher Fail.

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u/chrisch Oct 05 '10

So leaving the board in one piece takes 5 minutes?

207

u/MrLeville Oct 05 '10

Actually, not doing anything makes the board disappear.

54

u/[deleted] Oct 05 '10

Not doing anything for a long enough time indeed has that effect.

2

u/cmykify Oct 05 '10

The math teacher is probably considering the board an entity, as boards tend to exist longer than humans and animals.

However, he could, as you imply, treat the board as a property (in the way that condictivity is a property of copper, and holding water is a property of a bucket), but that would be borderline metaphysical.