Text Kuhn
Revolutions as Changes of World view
Paradigm changes cause scientists to see the world of their research-engagement differently.
As their only recourse to that world is through what they see and do, we may want to say that after a revolution scientists are responding to a different world.
At times of revolution, when the normal-scientific tradition changes, the scientist’s perception of his environment must be re-educated in some familiar situations he must learn to see a new gestalt.
After he has done so the world of his research will seem, and hence there, incommensurable with the one he had inhabited before.
A paradigm is prerequisite to perception itself.
What a man sees depends both upon what he looks t and upon what his previous visual-conceptual experience has taught him to see.
In the absence of such training there can only be
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