Inductive Inference Is The Only

[coining Phrase "null Hypothesis"] In Relation To Any Experiment We May Speak Of This Hypothesis As The "null Hypothesis," And It Should Be Noted That The Null Hypothesis Is Never Proved Or Established, But Is Possibly Disproved, In The Course Of Experimentation. Every Experiment May Be Said To Exist Only In Order To Give The Facts A Chance Of Disproving The Null Hypothesis.

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.

The Academic Mind, As We Know, Is Sometimes Capable Of Assuming An Aggressive Attitude. The Official Mind, On The Contrary, Is And Has To Be, Expert In The Art Of Self-defence.

Natural Selection Is Not Evolution.

The Neutral Zone Of Selective Advantage In The Neighbourhood Of Zero Is Thus So Narrow That Changes In The Environment, And In The Genetic Constitution Of Species, Must Cause This Zone To Be Crossed And Perhaps Recrossed Relatively Rapidly In The Course Of Evolutionary Change, So That Many Possible Gene Substitutions May Have A Fluctuating History Of Advance And Regression Before The Final Balance Of Selective Advantage Is Determined.