The last time I've used Turing machines was when I was trying to build one in Minecraft using redstone and pistons. But in general, Turing machines are a usefu

The last time I've used Turing machines was when I was trying to build one in Minecraft using redstone and pistons. But in general, Turing machines are a useful mental model when thinking about the fundamental nature of algorithms as well as when trying to reason if some non-trivial problem is computable or not. And in general, knowing Turing machines and being able to write Brainfuck is exactly the kind of mental game that will help you think and approach problems in a new way. And besides, writing Brainfuck is a helluva lot of fun!