You can't. If you were to PREVENT yourself
from buying it in the past...
The Big Bang Theory Season 1, Episode 14
Okay, how do you PREVENT
eddy currents in a transformer?
The Big Bang Theory Season 8, Episode 2
l need you to help PREVENT
an all-out war.
Breaking Bad Season 4, Episode 9
And you can't PREVENT it.
What mistake did Dad make?
Money Heist Season 3, Episode 8
No. If he had that,
he'd be trying to PREVENT NSYNC
The Big Bang Theory Season 11, Episode 13