My point is that a field of knowledge can endure a "crisis of foundations," in which the most fundamental issues are opened up for inquiry and deconstruction, w

My point is that a field of knowledge can endure a "crisis of foundations," in which the most fundamental issues are opened up for inquiry and deconstruction, without causing any permanent harm to the field. I would push even further and assert that any field of knowledge which doesn't regularly experience such crises is stagnant.