[SamoyedFurFluff]

Objectively we’ve only become smarter (IQs have increased), stronger (fitness records continue to be broken), etc. since infant mortality shrank. If you believe otherwise please provide evidence.

[oneshtein]

If continuously sample range [0..inf), then average will grow with time.

[antasvara]

Is there a reason you expect IQ to be unbounded? Feels like there are physical constraints, at which point you're sampling from a truncated normal distribution (or similar).

[qsera]

So it depends on how you want to measure it.

[amanaplanacanal]

How would you measure it?

[qsera]

I would not use individual IQs. Instead I would look at how smart/dumb the general population behaves.