We could, with a time machine, send a universe blowing up bomb far into the future, where all the matter and explosion is somehow designed to go backwards in time to create the universe
Slaughterhouse 5 - Kurt Vonnegut Jr.
... a character explains how the universe will end when a scientist test a new fuel.
The Star Diaries - Stanislaw Lem
... a scientist created the big bang by sending a massive particle back in time.
sounds like Tenet enough to me
What's happened happened.
;p
I can't just gloss over the "universe ending bomb' we supposedly are able to make first.
;p
At that point, what's even the point of anything.
Somewhat similar to ideas in
Slaughterhouse 5 - Kurt Vonnegut Jr.
... a character explains how the universe will end when a scientist test a new fuel.
The Star Diaries - Stanislaw Lem
... a scientist created the big bang by sending a massive particle back in time.
a.e. van vogt.