Fundamental physics is dying? [video]

State of Fundamental / Particle Physics

• Many agree particle physics is in a rut: the Standard Model keeps being confirmed, but no “sexy” new physics appears.
• Others stress there is still substantial progress (tetra/pentaquarks, precision tests, g-2, W mass updates, gravitational waves), just not paradigm-shifting.
• A particle physicist argues the field is not “dying”; advances are slower because experiments are harder and costlier, but work continues steadily.

Loop Quantum Gravity (LQG) and Lorentz Invariance

• The video’s main technical claim: LQG’s discrete areas conflict with Lorentz invariance unless the minimum area goes to zero or invariance is broken.
• Experimental bounds from astrophysical observations reportedly rule out the Lorentz-violating version.
• A prominent former LQG researcher agrees the situation is at least as bad as described.
• Some question whether the argument is as decisive as presented; others say the math really does force a harsh either/or.

String Theory and Testability

• Strong criticism that string theory has produced no clear, falsifiable prediction over decades and can be tuned to fit anything.
• Counterpoints:
  • It is practically hard to test quantum gravity at all, not just string theory.
  • Some string-inspired ideas (e.g. supersymmetry at accessible scales) have effectively been ruled out, but this doesn’t kill the whole framework.
• Debate over whether string theory has drifted into unfalsifiable “mathematical physics” rather than empirical physics.

Experiments, Colliders, and Funding

• Disagreement over future large colliders:
  • Critics: next collider has no targeted, likely discovery comparable to the Higgs; money might be better spent on other avenues.
  • Supporters: without new high-energy data the field will stagnate; also, if you stop building, you may lose the capability entirely.
• Some accuse big labs of overselling benefits; others call that a “false dichotomy” and say multiple approaches can be funded if plans are concrete.

Sociology, Ego, and Epistemology

• Several comments focus on ego, cognitive dissonance, and sunk-cost fallacy:
  • Senior researchers may resist abandoning decades of work.
  • Groups can become self-reinforcing and hostile to criticism.
• Comparisons are made to other domains where confident experts systematically overpredict.
• Disagreement over whether formal philosophy of science helps; some argue it’s mostly irrelevant, others think understanding limits of knowledge is essential.

Broader Speculation and Offshoots

• Some propose that physics may have followed a wrong fork long ago and needs deep backtracking, revisiting discarded ideas (aether, many-worlds, extra time dimensions, Kaluza–Klein).
• One elaborate conspiracy theory suggests fundamental physics was tacitly “soft-suppressed” after nuclear weapons to avoid dangerous discoveries; most find this implausible given geopolitical competition.
• Tangents arise about climate science, AI/ML winning physics-related Nobels, and the difference between testable science and unfalsifiable speculation.

Views on the Video and Communicator

• Many find the critique valuable, especially the technical part on LQG; endorsement by established experts in the field is noted.
• Others dislike the clickbait style, personal tone, and lack of detailed sourcing in a short “rant” format, saying it makes it hard to separate strong points from overreach.
• Some worry that painting whole subfields as “not even wrong” undermines public trust and oversimplifies a complex mixture of genuine exploration, dead ends, and institutional incentives.