С пинка Кекса читая о Bootstrap paradox, я наткнулась на нечто, взорвавшее мне мозг. Просто божественный бред, мозги разлетелись по стенам.
In Eliezer Yudkowsky's fanfiction "Harry Potter and the Methods of Rationality", Harry Potter attempts to intentionally abuse the paradox and find the two prime factors of 181,429 by using a time-turner to travel backward in time by one hour. He removes a piece of paper from his notebook, and receives the same paper, folded in half, from his future self (from one hour ahead) and determines in advance what he will write on the original paper depending on what he has written on the future iteration of the paper. If the paper is blank, he will write 101 x 101. If there are two numbers he will multiply them and see if they equal 181,429, if they do he will write the two numbers on the paper, fold the paper in half, wait an hour, and then give it to his former self. If they do not then he will add 2 to the number on the right, write the new numbers on the paper, fold the paper in half, wait an hour, and then give it to his former self. If the number on the right is 997 or greater, then he will add 2 to the number on the left and make the number on the right 101, write the new numbers on the paper, fold the paper in half, wait an hour, and then give it to his former self. If both numbers are 997 or greater then he will leave the paper blank, fold it in half, wait an hour, and then give it to his former self. Harry believes the only possible stable time loop is the one in which the paper has the two prime factors of 181,429. He unfolds the paper given to him by his future self and reads, in slightly shaky handwriting, "DO NOT MESS WITH TIME". He writes the same message, in slightly shaky handwriting, on the original paper which he plans to send back in time, and resolves not to experiment with time again until he is fifteen.
Автор, если что, занимается исследованиями в области искусственного интеллекта. xD