What is Webassembly?

Part : WAT?

Part: 0 1 2

Here is a useful tool that converts wat to wasm.

https://cdn.rawgit.com/WebAssembly/wabt/fb986fbd/demo/wat2wasm/

It doesn't seem to go the other way but as far as I know so far, there's no decomplilation step needed, they're equivalent representations - I'm guessing this is wrong, actually....