Exponential Explosions
Why O(2^n) isn't just slow. It's practically impossible. And what a chessboard grain of wheat teaches us about the limits of computation.
Why O(2^n) isn't just slow. It's practically impossible. And what a chessboard grain of wheat teaches us about the limits of computation.
If you can solve one problem, can you solve another? Reductions are the tool that lets us answer that question precisely — and they are the key to everything in Phase 2.
The gap between finding an answer and checking one feels obvious the moment you see it. This post asks why that obvious gap is also the deepest open question in all of computer science.
In 1971, Stephen Cook proved that one specific problem sits at the top of the entire NP hierarchy — and that solving it would solve everything else. This is the result that launched the field of NP-Completeness.