> Genetics is not a credible science This is a far stronger claim than I think you mean. We have a ton of evidence that those bits of DNA in our cells govern c

> Genetics is not a credible science This is a far stronger claim than I think you mean. We have a ton of evidence that those bits of DNA in our cells govern cell expression and even know in some cases that bit X being malformed causes bad condition Y (sure, you could hypothesize that they both have a common cause, but how the heck would that work? Correlation being causation works if both common cause and backwards causation are implausible, as they are often in genetics). > but not a very good one as even they don't have the same genetics Uhhh... they have almost exactly the same genetics. To a similar extent that two random cells from your body will have the same genetics. Yes, there will be a handful of mutations, but that's very unlikely to have an effect on any particular trait.