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Articole: 27
  1. Infinity

    Chapter 27 - Infinity Portent The wedding band: the use of a circle to represent infinity, an endless loop.

  2. Laws of Form

    Chapter 25 - Laws of Form Portent A formal system of Nonlinear Logic (NLL) is daunting.

  3. Engineering

    Chapter 26 - Engineering Portent To iterate.

  4. Frame

    Chapter 24 - Frame Portent The creative process; inspiration, progress, setback, breakthrough, catastrophe.

  5. Critique

    Chapter 23 - Critique Portent “What are friends for?”

  6. Chapter 22 - Quantum Temporal Indeterminacy Portent The strongest argument aginst FTL, against any kind of superluminal signaling, against spacelike causality in general, is the threat of temporal paradox, a closed causal loop in spacetime that denies its…

  7. Now and Then

    Chapter 21 - Now and Then Portent You can’t have FTL.

  8. FTL by Indistinguishability

    Chapter 20 - FTL by Indistinguishability Portent Measurements on distinguishable particles can’t leverage quantum entanglement and nonlocality to achieve superluminal signaling.

  9. Quantum Optics

    Chapter 19 - Quantum Optics Portent Can’t use quantum entanglement and nonlocality, ala a single EPR pair, because no change in measurement base yields a signal.

  10. Indistinguishable

    Chapter 18 - Indistinguishable Portent Flip two fair coins.

  11. Teleportation

    Chapter 17 - Teleportation Portent It would seem that nature keeps superluminal signalling all to herself.

  12. Bowtie

    Chapter 16 - Bowtie Portent Inspiration.

  13. Chapter 15 - Symmetric Spacetime Intervals Portent Objects are point like, waves are distributed.

  14. World Ribbons

    Chapter 14 - World Ribbons Portent The conventional metaphor for breaking out of a paradigm is thinking outside the box.

  15. 12 Light Seconds

    Chapter 13 - 12 Light Seconds Portent Physicists love their invariants.

  16. By Contradiction

    Chapter 12 - By Contradiction Portent There is no shortage of proofs that quantum nonlocality cannot be used to send superluminal signals.

  17. Quantum Tic-Tac-Toe

    Chapter 11 - Quantum Tic-Tac-Toe Portent This, then that.

  18. Objections

    Chapter 10 - Objections Portent Ambiguity.

  19. R&D

    Chapter 9 - R&D Portent Risk.

  20. Chapter 8 - Quantum Temporal Paradox (QTP) Portent Entanglement cannot be explained by timelike causality nor by common cause.

  21. Entanglement

    Chapter 7 - Entanglement Portent Entanglement is the unexpected phenomenon that individual particles can lose their individuality.

  22. Interference

    Chapter 6 - Interference Portent Logical linear western thought.

  23. Uncertainty

    Chapter 5 - Uncertainty Portent There is tension between observation and abstraction.

  24. Quantum Mechanics

    Chapter 4 - Quantum Mechanics Portent The uncertainty principle is not about measurements disturbing a system, although it is often taught that way.

  25. Relativity

    Chapter 3 - Relativity Portent The speed of light is more fundamental than just a velocity, it is the thread that weaves space and time together.

  26. Paradox

    Chapter 2 - Paradox Portent Self-reference has been at the heart of the major limit theorems of the last century, from Russell’s paradox in set theory, to Gödel’s incompleteness theorems in math, to the halting problem in software engineering.

  27. Paradigms

    Chapter 1 - Paradigms Portent Paradigm is a technical term, introduced by Thomas Kuhn in his seminal work The Structure of Scientific Revolutions.