A place to discuss potentially promising methods of intelligence amplification in the broad sense of general methods, tools, diets, regimens, or substances that boost cognition (memory, creativity, focus, etc.): anything from SuperMemo to Piracetam to regular exercise to eating lots of animal fat to binaural beats, whether it works or not. Where's the highest expected value? What's easiest to make part of your daily routine? Hopefully discussion here will lead to concise top level posts describing what works for a more self-improvement-savvy Less Wrong.
Lists of potential interventions are great, but even better would be a thorough analysis of a single intervention: costs, benefits, ease, et cetera. This way the comment threads will be more structured and organized. Less Wrong is pretty confused about IA, so even if you're not an expert, a quick analysis or link to a metastudy about e.g. exercise could be very helpful.
Added: Adam Atlas is now hosting an IA wiki: BetterBrains! Bookmark it, add to it, make it awesome.
If the metaphor of "more space" refers to the balance of intelligence and more directly physically useful attributes, and that balance is shifting towards the former, doesn't that imply that as we get smarter we'll get less physically fit, or at least no fitter?
If we're actually selecting for intelligence, then probably yes. But I don't see a lot of evidence of that happening since guys who are really sporty aren't exactly selected against in the dating pool.
Actually, now that I think about it it's probably too flippant to say it's a direct trade off between running marathons and being smart. It might be something else that gets traded off. Alternatively, the next step might just be for our bodies to adapt to our nigh-unlimited energy intake and start consuming more of it, without anything getting traded. Niche construction theory implies that since we've made conditions better for ourselves it's only a matter of time until we physically adapt to fit the niche more effectively.