After thinking about this a bit more, this says something about Voldemort's perfect occlumancy in that while he could convincingly become a lot of different characters, there were still parts of his underlying person (CEV?) that genuinely were so unlike other people he couldn't easily fake not having them.

(Which I guess is semi-confirmed in-story in that it says occlumancy and veritaserum enters the mind through specific surfaces that can be defended, but powerful methods like unbreakable vows/parseltongue/the mirror can't be blocked with it)

Iirc when they discover filch is a squib Ron explicitly says this is what a squib is ("like muggle born wizards, but in reverse and much rarer").

Another nitpick, but footnote 14 is wrong: Tonks was a metamorphmagus, not using polyjuice.

Actually now I want to write a spin off short story about this. It always bothered me that hpmor Dumbledore didn't really get any onscreen moments of awesome, I want to write a story set early in the Voldemort war where, for the first time, a relatively young inexperienced Voldemort has someone pull a successful plot against him by being proactive and he barely escapes (and rewrites some of his list with lessons).

Minor comment but Quirrel doesn't have a time turner; he just figured out a way to hack the protective shell around Harry's (which, given it was made to protect against interference by an eleven year old, it's pretty reasonable he can do).

My open question is: how did Dumbledore know Voldemort was Tom Riddle? When he set himself up as dark Lord he presumably didn't intend to leave a trace (he didn't with his David Monroe persona). Did Dumbledore discover it in some plot? Did he conclude it because Voldemort openly use parseltongue somewhere? Was it in the prophecies?

This assumes speed limits were correctly calibrated at some point. I think the actual cost of road deaths (which are arguably the top single cause of QALY loss even at current historically low rates) is high enough that I suspect it was originally set way too high and is still unreasonably high given the costs.

I think this describes how Eliezer's grudge against academia has set back AI alignment (even the parts that aren't related to his organization, since his cultural influence has made this a wider norm).

Partly street design to reduce speeding, partly encouraging other mode shares over private cars (see e.g. here https://www.theguardian.com/world/2020/mar/16/how-helsinki-and-oslo-cut-pedestrian-deaths-to-zero )

(Disclaimer: I'm ideological about disliking cars, which makes me less objective than I'd usually prefer to be on LW)

We haven’t solved traffic or auto accidents

Worth noting that this is a policy failure, not a technological one. Some places have solved this - e.g. Oslo has 0-1 car deaths a year - but American cities are unwilling or unable to make the infrastructure changes it takes. I think this is related to the lack of celebration issues - we celebrate change and progress less, and achieve less progress that would require change, because we value progress less than we used to.