There are some things in this world that just
happen. There's really no logical reason for it to happen, there's no explanation as to why it happens now, and not, say, three years ago.
Minecraft is one those things. It's a game, but not entirely. It's digital Lego, but not entirely. It's impossible to explain what it is in words alone - you need to experience it. All I have to point to is this: someone has created a working 16bit
ALU inside Minecraft. Which is a videogame. An
ALU running inside a videogame running on a processor which has an ALU. In blocks. Wait, what?