The foundation for the KISS principle – “Keep It Simple, Stupid”
“entia non sunt multiplicanda praeter necessitatem“
Words to the effect of:
“always use the simplest model that you can get away with“
or
“Things should not be multiplied beyond what is required“
Yes, indeedy …
Einstein is purported to have said: “Everything must be made as simple as possible, but no simpler.”
What he really said at a lecture in 1933 was:
“It can scarcely be denied that the supreme goal of all theory is to make the irreducible basic elements as simple and as few as possible without having to surrender the adequate representation of a single datum of experience.“
Or: “Keep it simple, Stupid!“