[tomkin]

My argument is that no one can claim BMI or IQ is a scientific form of measurement.

[lmm]

Both are absolutely scientific: they provide good test-retest reliability and correlate with other measures.

Maybe they are crude. Maybe there are better alternatives. That doesn't make them unscientific.

[tomkin]

I really don't know how you got here. BMI has been raked over the coals (new and old methods) for being wildly inaccurate for anyone outside of a conditional range. IQ does not predict what to expect from a human being.

Those who double down on IQ as being infallible have something to lose if it's proven to be hack. And history is not on your side here.

[iopq]

It's perfectly scientific. It just doesn't mean what people think it means.