It’s a limitation, not a flaw. Ethical concerns limit a lot of studies. It’s not... | Hacker News

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		dpark on March 11, 2018 \| parent \| context \| favorite \| on: Sleeping in rooms with even a little light can inc... It’s a limitation, not a flaw. Ethical concerns limit a lot of studies. It’s not generally considered ethical to induce depression in human subjects. But yes, it’s possible that some other factor is responsible, such as living next to a busy road with lots of street lights.

noname120 on March 11, 2018 [–]

Sorry for the confusion, I forgot to specify that I was giving an answer to the following:

> they only measured the lights that people already were exposed to

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