I think this is a lot of the explanation. What always surprises me is just how innumerate many people can be with little obvious impact on their day to day life

I think this is a lot of the explanation. What always surprises me is just how innumerate many people can be with little obvious impact on their day to day life. Also they are unable to do basic sanity checks like when I go in public how many of these types do I see etc. Also they must not have any other knowledge of demographic statistics to rely on.