I just want to point out that the time for one to randomly appear is somewhere between 10^10^50 and 10^10^69, which is is a pretty large gap. Like the difference between the two is just 10^10^69, mostly. I'll point out here that I'm not using units. The article does, but it's not like they really mean anything at these time scales. A plank time (10^-43 s) to the age of the current universe (10^9 yr) to the lower bound for the estimated time until the heat death of the universe (10^109 yr), all of those time units just end up as rounding errors compared to the lower limit of 10^10^50.<p>The article does not go over here the time that such a brain could last for, but given that it's quantum mumbo jumbo, we can again assume something in the times of 10^-43s to 10^109 yr. Which, again, means that such a brain can hardly be said to have ever have existed in the first place compared to the time of it's formation probability. And yes, that means our current universe is in the same 'meh, just round it off' bucket.<p>Like, we get caught up in the minutiae of this thing's mind, it's perceptions, it's sanity, it's soul (?). But if anything the absurdist thought experiment ends as just a mirror aimed at ourselves, with the void now creeping in behind our hats. What am I? What is perception? What is time? Can any of <i>this</i> ever possibly matter compared to these might-as-well-be infinities? Oh God!<p>I've put numbers up here, they are very poor estimates mostly. And then I tell you that these numbers are so huge that, very literally, nothing that will <i>ever</i> exist in our universe can be made to understand that far future in which this absurd quantum brain comes out of. That time ceases to have any meaning <i>at all</i> in this not quite so empty quantum vacuum.<p>So, having looked into this mirror, I don't know what tell you. I'm going for a walk, enjoy the season here, hug the fam, have a coffee, laugh, run, play. The universe has spared us this moment.