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Boston is dark at ~4:15 now, and I noticed that my willpower/concentration got a lot worse.
So I bought a 250W bulb (= 40 normal bulbs) and put it next to my desk. (Not right next to, bc it's uncomfortable to look at 
)
Seems to have extended my productive day by 1-2h.
Now curious: as of recently, it's no longer cost-prohibitive to make our indoor environments as bright as outdoors. (A 10 m^2 room needs 100k lumens; my 30k-lumen bulb was ~$100.) Why do we settle for less? It's not like low light is pleasant.
Obviously people with official "seasonal affective disorder" figured this out a long time ago, but if 10% of Alaskans get literally depressed in the winter, what % of people do you think have some kind of sub-clinical response to light deprivation? (I'd guess a lot?)
PS: Current ultra-bright LED bulbs aren't that good (mine needs a fan for heat dissipation and has some flicker issues) but I think that's because it's intended for, like, garages and streetlights and stuff. Seems like it should be possible to make much better versions.
(And yes, I am currently neck deep in a spreadsheet of chip-on-board LED part numbers 
)
PPS: If you're curious, photos of my desk with and without the bulb on (with the same camera settings). Obviously my phone camera (iPhone XR) does not have the dynamic range needed to capture the real difference, but it's still pretty stark.pic.twitter.com/ofTh18agHC
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