To the extent that we even understand string theory, it may imply a massive number of possible different universes with different laws of physics in each universe, and there may be no way of distinguishing between them or saying why the laws of physics are the way they are. And if I can predict anything, then I haven't explained anything.
Interpretation
This quote discusses the complexities of string theory and the implications of multiple universes with varying physical laws.
Lawrence M. Krauss highlights the difficulties inherent in understanding string theory, suggesting that if it allows for numerous universes governed by different laws of physics, it complicates our ability to comprehend or explain the universe we inhabit. The statement also reflects a philosophical view on knowledge and understanding, indicating that true explanation should allow for predictions, rather than simply identifying possibilities.
In practice
This quote can be used in discussions about the nature of science at a physics conference.
The one experience that I hope every student has at some point in their lives is to have some belief you profoundly, deeply hold, proved to be wrong because that is the most eye-opening experience you can have, and as a scientist, to me, is the most exciting experience I can ever have.
If our species is to survive, our future will probably require outposts beyond our own planet.
The ultimate arbiter of truth is experiment, not the comfort one derives from one's a priori beliefs, nor the beauty or elegance one ascribes to one's theoretical models.
I cannot stress often enough that what science is all about is not proving things to be true but proving them to be false.
The illusion of purpose and design is perhaps the most pervasive illusion about nature that science has to confront on a daily basis.
The universe is the way it is , whether we like_x000D_ it or not. The existence or nonexistence of a creator is independent_x000D_ of our desires . A world without God or purpose may seem harsh_x000D_ or pointless, but that alone doesn ' t require God to actually exist.
To move forward, what's required is a unified space agenda based on exploration, science, development, commerce, and security.
But our ways of learning about the world are strongly influenced by the social preconceptions and biased modes of thinking that each scientist must apply to any problem. The stereotype of a fully rational and objective scientific method, with individual scientists as logical (and interchangeable) robots, is self-serving mythology.
When the sun is sending more energy to earth in one hour than the entire world consumes in a year, any political play to undermine our ability to harness this energy effectively and efficiently is clearly not economical but it's also unethical.
Species evolve exactly as if they were adapting as best they could to a changing world, and not at all as if they were moving toward a set goal.
There are three stages in scientific discovery. First, people deny that it is true, then they deny that it is important; finally they credit the wrong person.
People often ask me why I persisted in doing research on a subject that was so controversial. I frequently respond by telling them that only a few scientists are granted the great fortune to pursue topics that are so new and different that only a small number of people can grasp the meaning of such discoveries initially.
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