> What I don't understand is where the signature came from -- I do see a Jan 2009 transaction involving that address on various blockchain explorers, but that particular signature is nowhere to be found. This could absolutely just be me not understanding how all of this works, but in order for this to be "really big news" I think you'd have to show proof that the signature given was posted with the transaction back in 2009. Otherwise, it just means that Hal Finney's wallet is compromised and someone has been signing random messages with it.
I think that's what's going on here. Got another email today letting me know that my request to delete my account is complete, yet I could reset my password just fine.
^ A thousand times this. Vet your advisor like there's no tomorrow. This is trickier than it sounds because the best source on this is your advisor's current or past grad students, and they often won't open up cause they don't know you. Your filter should then be: "if they don't give you great/enthusiastic feedback about their advisor, play it safe and look elsewhere."
Would a space with multiple aisles (think grocery store) be hard to map with your current algorithm? Or if I add beacons to each aisle I should be good to go?
I always liked how he would crack the ocassional joke every now and then in his books. "Never underestimate the bandwidth of a station wagon full of tapes hurtling down the highway."