> Even my brother and I share only ~50% DNA. This is completely false. Any two random humans have more than 99% overlap by virtue of being the same species. It

> Even my brother and I share only ~50% DNA. This is completely false. Any two random humans have more than 99% overlap by virtue of being the same species. It's even higher for brothers. We also share around 90% DNA with cats, dogs and elephants. https://www.amacad.org/publication/unequal-nature-geneticists-perspective-human-differences https://www.amacad.org/publication/unequal-nature-geneticist... > I'm not too worried about it because it's never a 100% overlap. This doesn't make sense. If they were equal, you'd be the same person except for environmental differences. Many applications don't need equal DNAs. E.g. https://youtube.com/watch?v=KT18KJouHWg https://youtube.com/watch?v=KT18KJouHWg > About insurance companies, they're legally forbidden to use such data. This is a very weak argument. There's a long history of companies doing illegal things, and even if it's illegal today it doesn't mean it'll be illegal tomorrow.