a minor issue on the sci-fi front
their time travel experiments have revealed a way for everyone to become immortal -
that is, they can make anyone younger while retailing their memories.
How is that not a big thing?
I mean, forget about time travel - which, they said doesn't lead to changes in the present - but the aging bit - that's a huge discovery - better than accessing dark energy that the soul stone lady did in order to remain young.