

If you mean the emojis, probably meant to represent “um, actually” or “well, actually” - the thing where one person corrects another in a condescending or egotistical way, usually associated with people making a whole identity out of being the “smartest person in the room”.
Of course, there’s nothing inherently wrong with correcting something that is incorrect. But if you combine it with how smarmy and arrogant western chauvinists can get about their position in the world, it can get annoying.









I’ve long wondered about that too. For one person I know, it did make a difference; they had a sleep study done, ended up with a sleep apnea diagnosis and CPAP machine, which for them became a significant difference in alertness and ability to stay awake throughout the day (prior to that, they’d had times they felt like they had to force themself to stay awake while driving).
But the process of actually doing the test does seem like it’d be quite a bit different from how one normally sleeps. I guess for someone who has sleep apnea, for example, the disorderly sleeping behavior is consistent enough across environments that it doesn’t matter if the testing environment is weird.