This one is a thermal.
It clearly shows (to me) that the fins are absolutely critical. Also, if I interpret Les's latest series of graphs, the more the better (i.e. a bunch of really small fins).
If you look REAL closely, you'll see a hint that the heat extends better through the central four fins, which are the only ones that are connected together. This is by far, what limits Radius from being more effective: disconnected fins. White Water's fins are ALL continous.
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