"My grandfather had two boys, my uncle had three boys, my dad had me and my two brothers, each of my brothers have had two boys. Then something happened with the chromosomal experiment and suddenly I've got three girls."

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What I’m saying is, when different experiments give you the same result, it is no longer subject to your opinion. That’s the good thing about science: It’s true whether or not you believe in it. That’s why it works.

— Neil deGrasse Tyson