Physicists often quote from T. H. White's epic novel The…
“Physicists often quote from T. H. White's epic novel The Once and Future King, where a society of ants declares, "Everything not forbidden is compulsory." In other words, if there isn't a basic principle of physics forbidding time travel, then time travel is necessarily a physical possibility. (The reason for this is the uncertainty principle. Unless something is forbidden, quantum effects and fluctuations will eventually make it possible if we wait long enough. Thus, unless there is a law forbidding it, it will eventually occur.)”
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
If physics lacks a law forbidding an event, quantum uncertainty suggests it could eventually happen.
In simple terms: No law, possible event.
Key Takeaway
Consider quantum limits before dismissing possibilities.
Themes
physics
philosophy
possibility
quantum mechanics
Mood
curious
speculative
Type
philosophical
scientific
When to use this quote
- theoretical research
- science fiction writing
- policy planning
- risk assessment
Key Concepts
uncertainty principle
causality
law of nature
Questions to Reflect On
- What physical laws could truly forbid time travel?
- How does uncertainty shape our expectations?
A Different Perspective
Quantum effects may be negligible over practical timescales.