Been trying for the longest time, I still don’t understand how quantum computing work. It’s always something-something tries all possible combinations and viola, your answer.
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"If you take nothing else from this blog: quantum computers won't solve hard problems instantly by just trying all solutions in parallel." - Scott Aaronson
This short comic he helped author actually summarizes the core idea fairly well https://www.smbc-comics.com/comic/the-talk-3