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Scientists are advancing a theory that human beings have stopped evolving because we've interfered with natural selection. Thousands of years ago, the fittest of the species endured, while the weakest stumbled into tar pits or got eaten by saber-toothed tigers. That doesn't happen much anymore, and consequently—these experts assert—humans are actually devolving, getting dumber and less fit. The hypothesis is bolstered by the popularity of daytime talk shows and psychic hotlines. More empirical evidence is supplied every Fourth of July, when alcohol and explosives are freely distributed among the populace. (en) |
