Mass Extinctions May Not Threaten Distant Futures,

If New Species Arise Very Rapidly In Small, Peripherally Isolated Local Populations, Then The Great Expectation Of Insensibly Graded Fossil Sequences Is A Chimera. A New Species Does Not Evolve In The Area Of Its Ancestors; It Does Not Arise From The Slow Transformation Of All Its Forbears. Co-author With Niles Eldridge

[e]volutionists Sometimes Take As Haughty An Attitude Toward The Next Level Up The Conventional Ladder Of Disciplines: The Human Sciences. They Decry The Supposed Atheoretical Particularism Of Their Anthropological Colleagues And Argue That All Would Be Well If Only The Students Of Humanity Regarded Their Subject As Yet Another Animal And Therefore Yielded Explanatory Control To Evolutionary Biologists.

The More Important The Subject And The Closer It Cuts To The Bone Of Our Hopes And Needs, The More We Are Likely To Err In Establishing A Framework For Analysis.

The World Is Full Of Signals That We Don't Perceive.

Orchids Were Not Made By An Ideal Engineer; They Are Jury-rigged From A Limited Set Of Available Components.