This is daft. Horcruxes are not the only available means of life extention, which voids the entire rest of the debate. There is the stone, whatever he can think up independently and worst come to worst, from harrys point of view, the odds of him, personally, dying of old age before the muggles come up with a hack to fix ageing is very low. 170 years, starting the clock in 1980 gets him to 2150!
also, unlike the case of an AI where you have to avoid crippling it, lest it becomes pointless to build it in the first place, using unbreakable wows as a punishment for grand crimes against humanity means that the restraints can be nearly abritarily harsh. The people writing the wows have no need to preserve the decision space they leave their victim or respect their autonomy. TLDR: Voldemort would not be able to spend decades thinking of ways around the wow, because doing so would violate any sensibly formulated wow. (stray toughts, sure, you have to permit that, or the wow kills in a day. Sitting down and working at it? No.)
I mentioned this in the TVtropes thread, but Merlin did not think through his interdict all that well - If you are going to compromise everyones mental integrity to end a cycle of magical destruction, then limiting information spread is an asinie way to do it - it would make infinitely more sense to subject all wizards to a magical prohibition against large scale destruction and killing. Phrasing it so that it wards agaist Dunning-Kruger fueled magical accidents without shutting down experimentation entirely is an interesting exercise, but should be possible.
Quidditch really nags me, because the team you are playing with has nearly zero relevance. And it is so unnessesary, even if Rowling desired a position on the team of key importance, the way the snitch works is still wrong - If it was worth zero points, but catching it ended the game, then seekers are still key, they just cannot win entirely on their own anymore, and the job would require more than just "flies fast",
Dumbledore explicitly warded her against mental interference as soon as he got her back - Which is presumably why Quirrell didnt use the groundhog day attack again. He only got one try to sway her this time, and while his mental model was more accurate based on the data from the last go.. nope, fail.
.. Not nessesarily. I just had an amusing thought. The number one use of polyjuice is quite obviously as a sex toy, right? Depending on how deep the transformation goes, it is entirely possible that the genetic lines of wizardry if anyone ever tested them would be enormously confusing, and a lot of squibs are technically the decendants of Jane Russell and Rudolph Valentino.
"Uncertain, ask again later". Oh, all right. : I am fairly confident that whatever models the various masterminds in play have of him are inaccurate and have been getting rapidly more so ever since he had his little chat with Harry about Lily. I suspect that he is done with being anyones pawn. Moving into blind guessing territory, I wouldnt be surprised if his actual plot is to walk off with the philosophers stone in order to duplicate it, or something else completely unrelated to the political maneuverings.
Re: the debt. I think Lucius may have been playing very high speed chess when he picked the amount. The point isnt to have Harry in debt to him, the point is to afford ex-deatheaters loyal to Lucius the oppertunity to trade in a blood debt to Harry for a monetary one to him. If this is so, the debts are likely to be paid off long before Harry can set any money making schemes in motion. - This would count as a downside to being in debt to Lucius - He cannot refuse cash in lieu as long as he is a debtor.
The ending note of that trial couldnt have been more precisely picked to convince people that he is a bodysnatch victim. Riddle me this? Gah. Incoming kidnapping and exorcism attempts. Not that Harry wouldnt benefit from a good exorsism.
Hermonie is going to read the note she gave him on dementors as soon as she is out of palfreys office, right? Seems nigh-inevitable. And I dont think she is nearly as commited to secrecy as Harry is, so word might well get out on how he pulled that stunt very shortly. On balance, this would tend to reduce the odds of him being murdered by a good citizen, so not all bad?
Harry probably wont call in any blood debts himself, but any former deatheathers with substantial spare coin will jump at the possibility to get out from under a debt to Harry by giving Lucius money, so that 60.000 might well be paid in full before he makes it back to hogwarts, let alone sets any money making schemes in progress.
Not just notes. - All written instructions on how to do spells above a certain level just flat out fail unless someone explains the spell to you in person at least once. Which has to be a mind hack, and if you are willing to alter peoples minds to remove the risk of idiots or madmen blowing up the planet/opening the gates of hell/ect, then picking this specific modification is very.. odd.
Hold up.. checking assumptions. Can anyone think of a way for the edict of merlin to do what it does without tampering with peoples minds?