I couldn't help but notice this guy never did the math. 15 units with 4 configurations each makes 60 configurations? Shouldn't that be 4^15 = 2^30 ~ 1000 000 000 ? Or can the upgrades be applied at the same thime? Cause that 'd be (2^4)^15 = 2^60 ~ 1000 000 000 000 000 000 combinations. Some help with this please!
