... The Actual And Physical

We May Consequently State The Fundamental Theorem Of Natural Selection In The Form: The Rate Of Increase In Fitness Of Any Organism At Any Time Is Equal To Its Genetic Variance In Fitness At That Time.

To Consult The Statistician After An Experiment Is Finished Is Often Merely To Ask Him To Conduct A Post Mortem Examination. He Can Perhaps Say What The Experiment Died Of.

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

Although No Explanation Can Be Expected To Be Satisfactory, It Remains A Possibility Among Others That Mendel Was Deceived By Some Assistant Who Knew Too Well What Was Expected. This Possibility Is Supported By Independent Evidence That The Data Of Most, If Not All, Of The Experiments Have Been Falsified So As To Agree Closely With Mendel's Expectations.

If One In Twenty Does Not Seem High Enough Odds, We May, If We Prefer It, Draw The Line At One In Fifty (the 2 Per Cent. Point), Or One In A Hundred (the 1 Per Cent. Point). Personally, The Writer Prefers To Set A Low Standard Of Significance At The 5 Per Cent. Point, And Ignore Entirely All Results Which Fail To Reach This Level. A Scientific Fact Should Be Regarded As Experimentally Established Only If A Properly Designed Experiment Rarely Fails To Give This Level Of Significance.