Thanks for this - if I am not mistaken this guy is from the arts, yet he really knows how to scrutinize the scientific literature critically, exactly a peer-reviewer would. It is quite impressive to see.
When you know how to do this, i.e. to criticize a piece of work not based on what you feel, but rather on what it actually states and whether its conclusions really follow from this, it is surprising how little specialized knowledge is actually required.