Now that I've gotten that out of the way, I'm going to respond to your counterpoint in character.
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If Republican Watson ran against Democrat Watson, for the first time, we would have a debate purely about issues and policies, and not about personal character. As for the platforms themselves, you might view those political platforms as wrong, but millions of Americans agree with them. This is just the ultimate expression of democracy: a statesman whose views conform to those of the people.
>Every 8-bit CPU I know of can be programmed to look up values in a hash table and spit out the expected results, just like human politicians program their brains to do.
That's true. But if Watson is 1% better than an 8-bit CPU, then that justifies spending millions on the upgrade, since the role of President has such a large effect on how well the government runs.
Pragmatically speaking, I think we could capture the political spectrum in 4 to 5 parties. Watson-left-liberalist mode (for the Sanders crowd), Watson-authoritarian-right (for Trump supporters) etc.
Edit: Sanders correction based on comment below.