I did a full accounting, including vague cost-benefit ranking:
https://www.gleech.org/stuff
Ignoring the free ones, which you should just go and get now, I think the best are:
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Sweet Dreams Contoured sleep mask. Massively improved sleep quality, without having to alter the room, close the windows, whatever. 100:1.
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Bowflex SelectTech dumbbells. A cheap gym membership is £150 a year; using these a couple times a week for 2 years means I’ve saved hundreds of pounds and dozens of hours commuting. They should last 15 years, so maybe total 30:1. (During the present lockdown, with gyms closed, the dumbbells get a temporary massive boost too.)
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[Queal, a complete food powder] once a day. Saves money (if a lunch would otherwise be £4) and time and the delivery vector means I actually use the other powders I buy (spirulina, creatine, beta-alanine). Big discount for verifiable EAs. Also a handy automatic prepper store. 10:1.
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Filco Majestouch 2 Tenkeyless mechanical keyboard. Assuming this decreases my RSI risk by 1%, it will have paid off 10 times over. But also in comfort and fun alone. 10:1
This amused me, given that in the 90s he was considered an outsider and an upstart, coming round here with his cognitive science, shaking things up. (” ‘The Conscious Mind’ is a stimulating, provocative and agenda-setting demolition-job on the ideology of scientific materialism. It is also an erudite, urbane and surprisingly readable plea for a non-reductive functionalist account of mind. It poses some formidable challenges to the tenets of mainstream materialism and its cognitivist offshoots” )
Not saying you’re wrong about him in that lecture. Maybe he has socialised and hardened as he gained standing. A funny cycle, in that case.