Possibly...though I don't think a PhD's a necessary prerequisite. I know @Priceless enjoyed Giles (and some of the arguments it puts forward aren't too far removed from those that underpin the race arguments at the moment). All it offers is an alternative narrative. What flummoxed me with Giles was "string theory" and translating it into multiverse theory (for that, I needed Prof Brian Cox). I actually had email correspondence with the writer of one and she was really nice!