Do you mean there are only 2 kinds of people in the world?
You can tell he doesn't understand binary.
Here's a breakdown:
Binary is just like the decimal system, except instead of there being 10 different numbers per digit (0-9) there is two (0-1).
So instead of each digit being a power of to, it's a power of two.
So 10 in binary is 2.
Either way, modelling in blockland just ain't possible. End of story.