Quote:
Originally Posted by willravel
Less than 10% of the population has red hair. It's obviously a birth defect, too, and we shouldn't let them get married.
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So you mean that less than 10% of the total population has red hair and the other 90%+ has, say, blonde hair? As we all know, this isn't true. The other 90%+ of people who don't have red hair have either black, brown or blonde hair (I'm sure there's a color I'm missing). Let's try this with human sexuality. You can either be heterosexual, homosexual or asexual. 90%+ of humans are heterosexual, less than 10% of humans are homosexual and very few, if any, are asexual.
If one state (In this case, heterosexuality in humans) occupies more than 90% of the sample size for the human population, it's safe to assume that it's the norm.