They collaborated with Blackstone and universities' studies. For all intents and purposes, they did indeed do their homework. As Jeff said (in a way) nobody really paid attention to steel. Most people don't know what their ROH is, let alone their blade radius. Sometimes I feel we live in a bubble here on MSH, but you have to think globally in this situation - I applaud them for bringing the subject to light. I think you're reading that wrong...they are talking about shorter turning radius, not shorter blade height.