The eternal mathematical arms race! Post any remotely challenging equation online and witness the epic battle between Indian and Chinese students flexing their computational muscles. While the rest of us are still trying to remember the quadratic formula, these mathematical gladiators are already solving it in their heads, backwards, and probably in their sleep too. Next time you think you've mastered a difficult problem, remember there's a 16-year-old somewhere in Chennai or Beijing who solved it while simultaneously making breakfast and coding a side project.