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My guesses:

1. The previous generation did not have laptops.

2. The previous generation did not nearly have as many programmer/hackers/<late-night-computer-user-moniker> as we have today

3. Because of #2, nobody cared if a really small percentage of the population lost sleep due to blue light?



I feel you've forgotten phones. A majority of people have a phone that they can stick in their face in bed.




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