* On its website, TFA uses a story of racism against blacks as a starting point for a lesson stating that math is neither neutral, rational, or logical: “[A] European explorer agrees to trade an African shepherd two sticks of tobacco in exchange for one sheep. When he offers four sticks of tobacco in exchange for two sheep, however, the shepherd declines; the explorer later tells this story as evidence of the shepherd’s inability to comprehend simple mathematical reasoning and as ‘proof’ of intellectual inferiority on the African subcontinent. But, if sheep are not standardized units, as there is no reason to believe them to be, then doesn’t it make sense that the second sheep might be worth far more than the first? And then doesn’t our premise of 2 + 2 = 4 look awfully naïve?”