Imre Lakatos Quotes
21 Sourced Quotes
For centuries knowledge meant proven knowledge... Einstein's results again turned the tables and now very few philosophers or scientists still think that scientific knowledge is, or can be, proven knowledge. But few realize that with this the whole classical structure of intellectual values falls in ruins and has to be replaced.
The great scientific achievements are research programmes which can be evaluated in terms of progressive and degenerative problemshifts; and scientific revolutions consist of one research programme superceding (overtaking in progress) another. This methodology offers a new rational reconstruction of science.
For the sophisticated falsificationist a scientific theory T is falsified if and only if another theory T' has been proposed with the following characteristics : (1) T' has excess empirical content over T: that is, it predicts novel facts, that is, facts improbable in the light of, or even forbidden, by T; (2) T' explains the previous success of T, that is, all the unrefuted content of T is included (within the limits of observable error) in the content of T'; and (3) some of the excess content of T' is corroborated.