In the video "Can Water Solve a Maze?", the creator conducts an experiment with four mazes based on an air pressure approach to see if water can solve a maze. He explains the difficulties of building a water-tight maze and surface tension, which prevents air or water from passing through. For the larger maze, the creator made a cut to allow water to find the lowest point to solve the maze. The results show water flows to all the lowest parts before it's blocked by geometry, and the whole system stops due to surface tension. The creator suggests checking out the nonprofit organization 80,000 Hours as it helps people find careers that solve the world's biggest problems.