# Quote — David Deutsch, The Fabric of Reality

> Kuhn's theory suffers from a fatal flaw. It explains the succession from one paradigm to another in sociological or psychological terms, rather than as having primarily to do with the objective merit of the rival explanations. Yet unless one understands science as a quest for explanations, the fact that it does find successive explanations, each objectively better than the last, is inexplicable.

- Author: [David Deutsch](https://www.leafyquotes.com/david-deutsch.md)
- Book: [The Fabric of Reality](https://www.leafyquotes.com/david-deutsch/the-fabric-of-reality.md)
- Source: [Wikiquote](https://en.wikiquote.org/wiki/David_Deutsch#The_Fabric_of_Reality_(1997)) ([CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/))
- Quote page: https://www.leafyquotes.com/david-deutsch/the-fabric-of-reality/kuhns-theory-suffers

## More from this book

> The next chapter is likely to provoke many mathematicians. This can't be helped. Mathematics is not what they think it is.

[Quote page](https://www.leafyquotes.com/david-deutsch/the-fabric-of-reality/the-next-chapter.md)

> The quantum theory of parallel universes is not the problem, it is the solution. It is not some troublesome, optional interpretation emerging from arcane theoretical considerations. It is the explanation—the only one that is tenable—of a remarkable and counter-intuitive reality.

[Quote page](https://www.leafyquotes.com/david-deutsch/the-fabric-of-reality/the-quantum-theory.md)

> Reality contains not only evidence, but also the means (such as our minds, and our artefacts) of understanding it. There are mathematical symbols in physical reality. The fact that it is we who put them there does not make them any less physical.

[Quote page](https://www.leafyquotes.com/david-deutsch/the-fabric-of-reality/reality-contains-not.md)