I agree with TeMPOraL, the first sentence sets up the example: > Imagine if a chemist told you offhandedly that the Russians had different chemical elements th

I agree with TeMPOraL, the first sentence sets up the example: > Imagine if a chemist told you offhandedly that the Russians had different chemical elements than we did. Make it clear that different elements being used in Russia is a hypothetical. He then uses it to show the absurd state of the state of psychopharmacology.