What A Man Sees Depends Both Upon

What Chemists Took From Dalton Was Not New Experimental Laws But A New Way Of Practicing Chemistry (he Himself Called It The 'new System Of Chemical Philosophy'), And This Proved So Rapidly Fruitful That Only A Few Of The Older Chemists In France And Britain Were Able To Resist It.

The Transition Between Competing Paradigms Cannot Be Made A Step At A Time, Forced By Logic And Neutral Experience. Like The Gestalt Switch, It Must Occur All At Once (though Not Necessarily In An Instant) Or Not At All.

"normal Science" Means Research Firmly Based Upon One Or More Past Scientific Achievements, Achievements That Some Particular Scientific Community Acknowledges For A Time As Supplying The Foundation For Its Further Practice.

Its Assimilation Requires The Reconstruction Of Prior Theory And Re-evaluation Of Prior Fact, An Intrinsically Revolutionary Process That Is Seldom Completed A Single Man And Never Overnight

Far From Being Magisterial In Its Objectivity, Science Was Conditioned By History, Society, And The Prejudices Of Scientists.