Hugo is right that the outsole material can vary. This article shows a neoprene sole and crepe side-by-side: Weightlifting Shoe Soles | Mark Rippetoe...
It's true that the lines between light and medium day pulling exercises can be a little blurry. Both are certainly light(er) than your heavy deadlift...
Hi Rip, I noticed a few similarities between the barbell row as you teach it, and the power clean. For anyone new around here, this video shows Rip's...