Faith Does Not Mean Credulity...

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.

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.

The Statistician Cannot Excuse Himself From The Duty Of Getting His Head Clear On The Principles Of Scientific Inference, But Equally No Other Thinking Man Can Avoid A Like Obligation.

The Tendency Of Modern Scientific Teaching Is To Neglect The Great Books, To Lay Far Too Much Stress Upon Relatively Unimportant Modern Work, And To Present Masses Of Detail Of Doubtful Truth And Questionable Weight In Such A Way As To Obscure Principles.

The More Highly Adapted An Organism Becomes, The Less Adaptable It Is To Any New Change.