FAQ: Why not develop weak human intelligence amplification first?

(Note: I was unsatisfied with a draft of this, heavily edited it, and I'm still unsatisfied. The notion of "weak HIA method" here is muddled, maybe conflating multiple things that shouldn't be conflated here. It may be used a bit inconsistently, and may make some arguments tautological or contradictory depending on local interpretation of the notion. I think most of the reasoning is still useful, so it's better to publish, but beware, and please critique. Or more importantly, please investigate ...