You're nitpicking for no reason; they're close approximations. maybe it was 2.1% or 1.9% maybe it was 40 million or 60 -- record keeping 1918 globally may not h

You're nitpicking for no reason; they're close approximations. maybe it was 2.1% or 1.9% maybe it was 40 million or 60 -- record keeping 1918 globally may not have been exactly computer-perfect. There was a war being recovered from, the world was still poor, and medical science inexact. The GP's point stands, I think.