Vaughan Bell has hacked into yet another loony book peddling pop neuroscience, Susan Greenfield’s Mind Change (“Head in the Clouds”). Obviously, Bell disagrees with about 98 percent of what the baroness has to say. So why does she hold on to a different, obviously untenable point of view? According to Bell, the famed (if controversial) neuroscientist is basically a half-wit who can barely function at the cognitive level of an average undergrad. In any case, she is less mentally competent than a first-year graduate student who has been warned in a research methods seminar not to confuse correlation with causation. Now this is one curious causal explanation.