Relevant thermodynamical point: only reversible computations can add nothing to entropy, even in theory. So these computers couldn’t do input-output. (This interacts with one of my weird rough-belief-systems. If a process interacts with its surroundings, you must include these interactions in your description of it, so it stops being simple. I think that the simplicity of a world does… something… although I can’t figure out what.)
Relevant thermodynamical point: only reversible computations can add nothing to entropy, even in theory. So these computers couldn’t do input-output. (This interacts with one of my weird rough-belief-systems. If a process interacts with its surroundings, you must include these interactions in your description of it, so it stops being simple. I think that the simplicity of a world does… something… although I can’t figure out what.)