You can't convince people of something they already know. It's the same reason arguing with religious people is futile. It's a mistake to assume people only deny things they believe are untrue.
One thing you will notice is how if you do say IQ is genetic, certain people will call you racist. This strikes me as very similar to looking up rude words in the dictionary.
There are things you know and you know others know, but you never mention. Most of the time that's because there's no reason to mention it. There's no point talking about uncomfortable things just because you can. What's worrying is when something actually important but still can't be talked about.
One thing you will notice is how if you do say IQ is genetic, certain people will call you racist. This strikes me as very similar to looking up rude words in the dictionary.
There are things you know and you know others know, but you never mention. Most of the time that's because there's no reason to mention it. There's no point talking about uncomfortable things just because you can. What's worrying is when something actually important but still can't be talked about.