Isolating Mechanisms Are Biological Properties Of Individuals

Definitions Are Temporary Verbalizations Of Concepts, And Concepts- Particularly Difficult Concepts- Are Usually Revised Repeatedly As Our Knowledge And Understanding Grows.

Evolution Thus Is Merely Contingent On Certain Processes Articulated By Darwin: Variation And Selection.

Two Forms Or Species Are Sympatric, If They Occur Together, That Is If Their Areas Of Distribution Overlap Or Coincide. Two Forms (or Species) Are Allapatric, If They Do Not Occur Together, That Is If They Exclude Each Other Geographically. The Term Allopatric Is Primarily Useful In Denoting Geographic Representatives.

Life Is Simply The Reification Of The Process Of Living.

All Interpretations Made By A Scientist Are Hypotheses, And All Hypotheses Are Tentative. They Must Forever Be Tested And They Must Be Revised If Found To Be Unsatisfactory. Hence, A Change Of Mind In A Scientist, And Particularly In A Great Scientist, Is Not Only Not A Sign Of Weakness But Rather Evidence For Continuing Attention To The Respective Problem And An Ability To Test The Hypothesis Again And Again.