They say that called the US Population correct at 395m, when it's 316m. It was 191m in 1964. So instead of over 100% increase it was 65%. Doesn't feel close

They say that called the US Population correct at 395m, when it's 316m. It was 191m in 1964. So instead of over 100% increase it was 65%. Doesn't feel close to me. For something like this, where we have good models (for example Social Security needs to predict US pop correctly) -- need to be a lot closer to call it "Correct". Looks like they misread the baby boomer trend -- and didn't predict the effect of widespread, effective, legal birth-control, women entering the workplace in larger numbers, etc.