Many people lack basic scientific knowledge

Intelligence varies more than it may appear. I tend to live and work with people near my own intelligence level, and so―probably―do you. I know there’s at least two tiers above me. But there’s even more tiers below me.

A Gallup poll of 1,016 Americans asked whether the Earth revolves around the Sun or the Sun revolves around the Earth. 18% got it wrong. This isn’t an isolated result. An NSF poll found a slightly worse number.

Ironically, Gallup’s own news report draws an incorrect conclusion. The subtitle of their report is “Four-fifths know earth revolves around sun”. Did you spot the problem? If 18% of respondents got this wrong then an estimated 18% got it right just by guessing. 3% said they don’t know. If this was an exam, then we would conclude that only three fifths of Americans know the Earth goes around the Sun.

The NSB, which gets its data from the GSS, found 27% of Americans got this question wrong. If we assume those 27% were guessing, then 46% of Americans know that the Earth goes around the Sun.

It could be worse. 59% answered correctly the sex chromosome question, which indicates that 18% know the true answer. 45% answered correctly about whether lasers focus sound waves which means that −10% of Americans know that lasers don’t focus sound.