The thing that you have to understand is that IQ is not a perfect measure of intelligence.
Yes also body fat calipers are imperfect at measuring body fat, but it gets you in the ballpark.
. If someone was really good at math, like NASA level good, you would say they are smart. But you could also say Napoleon, or other military generals were smart.
Yes mathematicians use their intelligence for math and Napolean for Battles. Napoleon likely would have excelled at math, but your average mathematician has an IQ close to 130 and Napolean likely is between 150 and 170 in IQ range.
People have to remember, IQ is not Intelligence. It's the best we have so far, and it is applicable in some scenarios, but you have to remember that it is very imperfect
Yes also pregnancy tests are not perfect either most are only 99.999% accurate and that is under perfect conditions.
Here is why IQ matters.
It's useful in determining who we should discourage from voting in elections. You see politicians like to take advantage of stupid people by offering them free shit and stupid people are well stupid, so they vote for free shit.
One issue with this is that it is harmful in the long term, however there is a second issue. Where do you think they get their free shit from?
They get it from smart people who make a lot more than them. Subsidies are essentially a tax for not being retarded..
I am not trying g to be mean about it. However, have you actually ever talked to a retard? It's somebody with like a 60 IQ and if you have an average IQ of 100, it's just not pleasant. That 40 point IQ difference is huge.
It's the same thing for me. If I talk to somebody with an IQ of 120, it's essentially like talking to a retard for you, so you can see how sometimes I get frustrated. I mean no harm it's just that it's hard for them to understand me, which can frustrate me.