I'd say both. But it does matter. It could for example be used in obfuscators. Brainfuck itself has formal proof of being turing complete, so the easiest way to

I'd say both. But it does matter. It could for example be used in obfuscators. Brainfuck itself has formal proof of being turing complete, so the easiest way today to prove that a language is turing complete is to implement a brainfuck interpreter. Which is just a few lines of code instead of this: http://www.iwriteiam.nl/Ha_bf_Turing.html http://www.iwriteiam.nl/Ha_bf_Turing.html