To describe #how means to reconstruct the series of specific events that led from one point to another.

To explain #why means to find causal connections that account for the occurrence of this particular series of events to the exclusion of all others.

-excerpt, Sapiens

@m_zaink We live in a local universe of randomness and "how" is to fall into the trap of hindsight, and "why" is the trap of the human mind needing to understand while living in a whirlpool. So we write our beliefs on the blank line. Some would say the answer to "why?" is why not?