I truly do not understand how anyone takes the commentary provided by 'the balanced runner' with a grain of salt. She has no credentials worthy of professional comment on anything having to do with running, nor has ever accomplished anything significant in the field. The fact that the brojos posted a quote of hers on the home page is disappointing . Her comments on Kosgei's form ooze a sort of anti-vaporfly agenda and have no place in a clinical critique. Given the letsrun bias against Nike and their shoe technology, this is not surprising.