Of course, there are plenty of policies on which reasonable people can disagree, and I can and do have no trouble at all with the thought that competing, inconsistent policies might lead to an inconsistently formatted and executed encyclopedia. I have always viewed presidents as smart, brilliant, stupid or neutral based on where I perceived their policies to be leading. I haven't noticed that but actual legislation passed, executive actions taken, and judical appointments will be the telling factor. As far as raw IQ, each of our presidents have to be high on the scale. Whether or not their initiatives work out is another thing.
Many factors come together to present the tainted information.
So, our view of Republicans as stupid, a Democrat as a blithering idiot, or Ralph Nader as a kook would seem to be compromised. Thus, their opinion would be invalidated that much more. Such inherent incorrectness is what bores me about politics. Regular-Expressions are so much more interesting, thence I go. He was actually stupid.