Makers of "impossible" puzzles must get a kick out of watching people struggle to solve their creation, sitting there all smug with that "I know something you don't know" face on as the person flounders.
And yet these puzzles captivate certain people, frustrating and beffudling as they are, and these obsessed puzzlers will spend years trying to solve the puzzle even if they never get anywhere.
The older Japanese gentleman in this video has been trying to solve an "impossible" puzzle for a decade, and after the solution to the puzzle is revealed to him it becomes clear he should have chosen a different hobby!