Scott quoted a famous geneticist, who said, "Nothing in biology makes sense except in the light of evolution." I would like to drop one word, so that the quote is true. It should read, "Nothing in biology makes sense in the light of evolution." For example, evolution has no explanation as to why and how around 1.4 million species of animals evolved as male and female. No one even goes near explaining how and why each species managed to reproduce (during the millions of years the female was supposedly evolving to maturity) without the right reproductive machinery.