Experimental Observations Are Only Experience Carefully Planned

Experimental Observations Are Only Experience Carefully Planned In Advance, And Designed To Form A Secure Basis Of New Knowledge.

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.

No Efforts Of Mine Could Avail To Make The Book Easy Reading.

Natural Selection Is A Mechanism For Generating An Exceedingly High Degree Of Improbability.

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