I like the way people keep trying to prove or disprove something that can't be proven or disproven. The paper that SRD posted a link to today would be useful for WFB and Two Tired since it would allow them both to right. Essentially, one of the problems with current helmet designs is that they work best at impacts towards the upper end of the test speed where the foam compresses and the plastic cracks but they do almost nothing at low speeds where the foam doesn't compress and so forces are barely dissipated and instead are transmitted more or less undiminished to the brain. That was the gist of it, I think.
In once sense, Baldcyclist's examples of people use their own contradictory experiences to come to opposing conclusions demonstrates that while individual experiences and beliefs are often OK for making your own decisions (provided they do no harm to anyone else), they are no basis for public policy. But sadly, as Ben Goldacre (and many others demonstrate) the science is pretty lacking too.
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