You ship your O(n³) nested loop monstrosity to production, it barely works, users complain it's slow, and then some random viewer on YouTube casually drops an optimized solution that's forty million percent faster . Not 2x faster. Not 10x. Forty. Million. Percent. That's the beautiful humility of being a developer: you think you've solved the problem, then someone shows you they can solve it in O(1) while you're out here brute-forcing like it's a LeetCode Easy on your first day. The internet never forgets, and it definitely optimizes better than you. Bonus points for the 28-minute video runtime and 2.9M views. Nothing says "I made a mistake" quite like your inefficient code becoming educational content for millions.