Theory Assessment Quotes

If it disagrees with experiment, it's wrong.

Under my definition, a scientific theory is a proposed explanation which focuses or points to physical, observable data and logical inferences. There are many things throughout the history of science which we now think to be incorrect which nonetheless would fit that which would fit that definition. Yes, astrology is in fact one.

You have to be careful when you use beauty as a guide. There are many theories people didn't think were beautiful at the time but did find beautiful later—and vice versa. I think simplicity is a good guide: The more economical a theory, the better.

A theory is only as good as its assumptions. If the premises are false, the theory has no real scientific value. The only scientific criterion for judging the validity of a scientific theory is a confrontation with the data of experience.

the truth and value of a theory does not depend on the number of people who are interested in it - otherwise you might compare the number of people who follow the predictions of astrologers in the daily press with those who attend lectures by Einstein, and conclude that astrology was more valuable and true than physics.

You know very well that unless you're a scientist, it's much more important for a theory to be shapely, than for it to be true.

Falsifiability for a theory is great, but a theory can still be respectable even if it is not falsifiable, as long as it is verifiable.