nah it's actually pretty low, toothpaste isnt in your mouth for a huge amount of time and it needs to be a certain level of nontoxic for edibility. this is why dentists still do fluoride soaks. the fluoride in the water also accumulates in and hardens bones a bit, though not a ton.
yes fluoride diffuses into enamel and chemically and mechanically hardens it. this effect is strongly linked to better dental outcomes for children and adults. also, tons of places actually remove fluoride to the needed levels because it is naturally higher.
the "always conquered" thing, this is a fatalism only justified by it being what happened, not what always must happen. this is an incredibly important distinction.
i feel you are confused. internal review boards, of which there are many, regularly allow human trials. they are necessary for the fda's approval as well. there are tons of ways for patients to access ethically reviewed experimental treatments, but terminal patients are extremely likely to. you are correct that experimenting on onesself is often far less troubling though
that's not how that works, we cant regrow (most) vital organs (liver says hi) because of "engineering problems" not because evolution is random. we personify adaptations to understand them, it can lead to issues but yours is a massive overcorrection.
there is not a single thing that could wipe out a deep sea habitat that wouldnt also wipe any space colonies. but i dont see anybody arguing for that, despite being far more achievable and practical. also, there is no feasible way for space colonies to be self sufficient anywhere in the near future, so wiping out earth also wipes out space colonies relying on it for supplies. this argument aboOt survivability is absurd.
via statistical imitation. other methods, such as solving and implementing by first principles analytically, has not been shown to be np hard. the difference is important but the end result is still no agigpt in the foreseeable and unforeseeable future.
the limitation is specifically using the primary machine learning technique, same one all chatbots use at places claiming to pursue agi, which is statistical imitation, is np-hard.
also the answer to that question, shitloads of data for a better ai, is yes… with logarithmic returns. massively underpriced (by cost to generate) returns that have questionable value statement at best.
what is that thing wired into a 600v line??