Interesting commentary on flex in the frame, but, if you've been keeping up with Ducati, you'd know that they have been working with the concept for quite a while. They have engineered flex into their frames while building stiff suspensions as it allows a more predictable response than the other way around. And they are moving to twin shocks in some cases as well, since the single-sided swingarm is proving problematical on some of the bikes, even though it allows for faster tire changes. The "tuned flex" of the Ducati frame is one of the reasons that it works so well. I guess that the concept must have some validity, as they have done OK on the WSB circuit.