"Seeking New Laws"

we always try to guess the most likely explanation, keeping in the back of the mind the fact that if it doesn't work, then we must discuss the other possibilities.

What we need is imagination. But imagination is a terrible straitjacket. We have to find a new view of the world that has to agree with everything that's known, but disagree in its predictions, some way. Otherwise it's not interesting. And in that disagreement, agree with nature.

As soon as any real, definite idea is substituted, it becomes almost immediately apparent that it doesn't work.

It's necessary to make science useful, although it's uncertain. It's only useful if it makes predictions. It's only useful if it tells you about some experiment that hasn't been done. It's no good if it just tells you what just went on. So it's necessary to extend the ideas beyond where they've been tested.

Now you see, of course, that with this method, we can disprove any definite theory. If you have a definite theory and a real guess, from which you can really compute consequences, which could be compared to experiment, then in principle, we can get rid of any theory. We can always prove any definite theory wrong. Notice, however, we never prove it ... See more

If you can find any other view of the world which agrees over the entire range where things have already been observed, but disagrees somewhere else, you've made a great discovery. Even if it doesn't agree with nature. It's darn hard, it's almost impossible, but not quite impossible, to find another theory, which agrees with experiments over the en... See more

Well, that's the way that it is scientific. It is scientific only to say what's more likely and less likely, and not to be proving all the time, possible and impossible.

I must say that in this age, people are experiencing a delight, a tremendous delight. The delight that you get when you guess how nature will work in a new situation, never seen before. From experiments and information in a certain range, you can guess what's going to happen in the region where no one has ever explored before. It's a little differe... See more

This kind of game, of roughly guessing at family relations and so on, is illustrative of a kind of preliminary sparring which one does with nature, before really discovering some deep and fundamental law. Before you get the deeper discoveries, examples are very important in the previous history of science. For instance, Mendeleev's discovery of the... See more

We must, and we should, and we always do extend as far as we can beyond what we already know, those things, those ideas that we've already obtained. We extend the ideas beyond their range. Dangerous, yes, uncertain, yes. But the only way to make progress.