When you look at a Rubik's cube, you don't just pick out specific positions of colored squares relative to each other. You also pick up the fact that it's a Rubik's cube and not a bird or a series of binary digits or English text. If an orange cat lunged at your Rubik's cube while you were studying it, you wouldn't process it as "face 3 has 4 red squares on the first row, then an orange diagonal with sharp claws", you'd process it as "fast moving sharp clawed orange cat attacking cube". Which implies that every time you loom at the cube you also notice that it's still a cube and not any of the millions of other objects you can recognize, adding many more bits of information.
Similarly, when you're typing English text, you're not just encoding information from your brain into English text, you're also deciding that this is the most relevant activity to keep doing at the moment, instead of doing math or going out for a walk. Not to mention the precise mechanical control of your muscles to achieve the requisite movements, which we're having significant trouble programming into a robot.