We Have The Duty Of Formulating, Of

No Practical Biologist Interested In Sexual Reproduction Would Be Led To Work Out The Detailed Consequences Experienced By Organisms Having Three Or More Sexes; Yet What Else Should He Do If He Wishes To Understand Why The Sexes Are, In Fact, Always Two?

The Statistician Cannot Evade The Responsibility For Understanding The Process He Applies Or Recommends.

[coining The Phrase "test Of Significance"] Critical Tests Of This Kind May Be Called Tests Of Significance, And When Such Tests Are Available We May Discover Whether A Second Sample Is Or Is Not Significantly Different From The First.

We Have Usually No Knowledge That Any One Factor Will Exert Its Effects Independently Of All Others That Can Be Varied, Or That Its Effects Are Particularly Simply Related To Variations In These Other Factors.

Inductive Inference Is The Only Process Known To Us By Which Essentially New Knowledge Comes Into The World.