A closer look
Nothing achieves inner peace quite like your master intentionally snapping your sanity in half with an unanswerable riddle. Hakuin reinvigorated Rinzai Zen by weaponizing the kōan. He didn't want his students to philosophize about the sound of one hand clapping; he wanted them to hit a brutal, agonizing cognitive wall. The sheer frustration of trying to rationally solve the unsolvable is designed to create 'Great Doubt.' When the dualistic, logical mind finally entirely exhausts itself and collapses under the pressure, absolute non-dual awareness violently rushes in to fill the void.
