Once we have scalable quantum computers, fusion power, time travel and an indestructable material, I figure we can bundle all that together with instructions to send a particle back after T+1 on termination. Some problems will stay unsolved as they go on to the heat-death of the universe but maybe one or a few comes back with a useful result!

Certainly with the right investments we'll get there within the next 5 years if you ask Musk and Altman. While a time machine might sound uncertain in that timefram, I'm sure AI will figure it out for us.