Causes Quote by Walter A. Shewhart

Variation must be taken as random until there is positive evidence to the contrary.

— Harold Jeffreys

I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.

— Charles Darwin

Postulate 2. Constant systems of chance causes do exist in nature.

— Walter A. Shewhart

It struck me that favourable variations would tend to be preserved and unfavourable ones tend to be destroyed

— Charles Darwin

Therefore to the same natural effects we must, as far as possible, assign the same causes.

— Isaac Newton

Therefore, the causes assigned to natural effects of the same kind must be, so far as possible, the same.

— Isaac Newton

We must understand variation.

— W. Edwards Deming

Postulate 1. All chance systems of causes are not alike in the sense that they enable us to predict the future in terms of…

— Walter A. Shewhart

“Only a minority of biologists today hold that the variation of evolution cannot be random. In this point the minority are on more solid…

— Lee Spetner

Science must constantly be reminded that her purposes are not the only purposes and that the order of uniform causation which she has use…

— William James

I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection, in order to mark its…

— Charles Darwin

The basic formulation, or bare-bones mechanics, of natural selection is a disarmingly simple argument, based on three undeniable facts (overproduction of offspring, variation, and…

— Stephen Jay Gould