Oddly, even from intellectuals, you rarely hear what is one of the
strongest arguments for the bill, namely that personal genome
sequencing might mean — how many years from now? — that many more people have pre-existing conditions than we currently are aware of.

What I find “odd,” is that Tyler doesn’t mention how silly this “strong” argument is.  Even Krugman admits that banning pre-existing conditions, by itself, is a recipe for disaster.  And the more pre-existing conditions we know about, the worse the disaster would be!