Multiply is a redundancy

Combinations that are not prime can be reconstructred from two different paths.  Eventually those two paths meet, one up the other down, and they cancel.  So non primes create regions where the net change in gradient is zero from the exchanges. The tendency if to reduce dimensionality so in that region the Null exchange prevails. Vacuum activity goes to zero, or there are groups of elements who sit at zero dimension, one in value.