Meaning: The quote by David Deutsch, a physicist and author, discusses the concept of time travel and its potential implications for our world-view. Deutsch is known for his work in quantum physics and the theory of parallel universes, and his quote reflects his perspective on the possibility of time travel and its compatibility with his understanding of the universe.

The idea of time travel has been a subject of fascination and speculation in science fiction and theoretical physics for decades. It has captured the imagination of many and raised profound questions about the nature of time, causality, and the structure of the universe. David Deutsch’s quote presents an intriguing perspective on this concept, suggesting that if time travel were to become a reality, it would not necessarily require a fundamental shift in our understanding of the world.

Deutsch's assertion that time travel, if achieved, should not require any fundamental change in world-view, speaks to his confidence in the consistency of his own world-view and its potential compatibility with the theoretical possibility of time travel. It suggests that the principles and theories he presents in his work are robust enough to accommodate such a profound and paradigm-altering concept.

In his book "The Fabric of Reality," Deutsch explores the intersection of science, philosophy, and technology, presenting a bold and expansive vision of the nature of reality and the potential of human knowledge and creativity. The world-view he refers to in the quote likely encompasses his ideas about the multiverse, quantum computation, and the nature of scientific explanation.

Deutsch is a proponent of the many-worlds interpretation of quantum mechanics, which posits the existence of a multitude of parallel universes, each representing a different possible outcome of quantum events. This interpretation challenges conventional notions of time and causality, and it is within this framework that Deutsch may be considering the implications of time travel.

The quote also suggests that the world-view presented in his book is broad enough to encompass the potential discoveries and technological advancements that could arise from the realization of time travel. It reflects an attitude of intellectual openness and confidence in the explanatory power of his theories.

It is important to note that the quote does not delve into the technical details or feasibility of time travel, but rather focuses on the potential implications for our understanding of the world. It invites readers to consider the hypothetical scenario of time travel and its philosophical and scientific ramifications.

In conclusion, David Deutsch's quote on time travel reflects his confidence in the compatibility of his world-view with the theoretical possibility of time travel. It underscores the interdisciplinary nature of his work, which bridges physics, philosophy, and technology. While the realization of time travel remains a subject of speculation and theoretical exploration, Deutsch's quote encourages us to contemplate its potential impact on our understanding of the universe.