I think a great perspective on the "WHY" is one of the recollections by Dijkstra: https://www.cs.utexas.edu/users/EWD/ewd13xx/EWD1303.PDF https://www.cs.utexas.

I think a great perspective on the "WHY" is one of the recollections by Dijkstra: https://www.cs.utexas.edu/users/EWD/ewd13xx/EWD1303.PDF https://www.cs.utexas.edu/users/EWD/ewd13xx/EWD1303.PDF