### About

### Quantum Theory, Groups and Representations

### Not Even Wrong: The Book

### Categories

- Book Reviews (98)
- BRST (12)
- Experimental HEP News (148)
- Fake Physics (5)
- Favorite Old Posts (46)
- Langlands (33)
- Multiverse Mania (146)
- Not Even Wrong: The Book (27)
- Obituaries (20)
- Quantum Mechanics (10)
- Quantum Theory: The Book (6)
- Strings 2XXX (16)
- This Week's Hype (100)
- Uncategorized (1,159)

### Recent Comments

- Knockin' On Heaven's Door 1

Jon Awbrey - The Multiverse Falsified 14

Peter Woit, Uncommon Sense, Peter Woit, Low Math, Meekly Interacting, Peter Woit, Lee Smolin [...] - Lost in Math 58

DrDave, Peter Woit, OT, F. G., TS, Another Anon [...] - Back at Work 7

LMR, David Roberts, Steven Patenaude, Peter Erwin, Carlos, Peter Woit [...] - Feynman at 100 55

Angelos, Peter Woit, anon, GoletaBeach, Joao Leao, David Brown [...]

- Knockin' On Heaven's Door 1
### Archives

### Links

### Mathematics Weblogs

- Alex Youcis
- Alexandre Borovik
- Anton Hilado
- Cathy O'Neil
- Daniel Litt
- Danny Calegari
- David Hansen
- David Mumford
- Emmanuel Kowalski
- Harald Helfgott
- Jesse Johnson
- Johan deJong
- Lieven Le Bruyn
- Mathematics Without Apologies
- Michael Hutchings
- Motivic Stuff
- Noncommutative Geometry
- Pieter Belmans
- Qiaochu Yuan
- Quomodocumque
- Rigorous Trivialities
- Secret Blogging Seminar
- Terence Tao
- The n-Category Cafe
- Timothy Gowers

### Physics Weblogs

- Alexey Petrov
- AMVA4NewPhysics
- Andrew Jaffe
- Angry Physicist
- Capitalist Imperialist Pig
- Chad Orzel
- Charles Day
- Clifford Johnson
- Cormac O’Raifeartaigh
- Doug Natelson
- EPMG Blog
- Georg von Hippel
- Gordon Watts
- Jackson Clarke
- Jacques Distler
- Jennifer Ouellette
- Jim Baggott
- Joe Conlon
- John Horgan
- Kyle Cranmer
- Lubos Motl
- Makoto Sakurai
- Mark Goodsell
- Matt Strassler
- Matthew Buckley
- Michael Schmitt
- Norbert Bodendorfer
- Peter Orland
- Physics World
- Reimagine Physics
- Resonaances
- Robert Helling
- Ross McKenzie
- Sabine Hossenfelder
- Scott Aaronson
- Sesh Nadathur
- Shaun Hotchkiss
- Shores of the Dirac Sea
- Stacy McGaugh
- Steve Hsu
- Tommaso Dorigo

### Twitter

### Meta

# Category Archives: Favorite Old Posts

## Beyond Falsifiability

Sean Carroll has a new paper out defending the Multiverse and attacking the naive Popperazi, entitled Beyond Falsifiability: Normal Science in a Multiverse. He also has a Beyond Falsifiability blog post here. Much of the problem with the paper and … Continue reading

Posted in Favorite Old Posts, Multiverse Mania
40 Comments

## Latest on abc

I’ve seen reports today (see here and here) that indicate that Mochizui’s IUT papers, which are supposed to contain a proof of the abc conjecture, have been accepted by the journal Publications of the RIMS. Some of the sources for … Continue reading

Posted in Favorite Old Posts, Uncategorized
61 Comments

## Theorists Without a Theory

I had been intending to write something here on the blog about this essay by George Ellis, so when I was contacted by someone at Inference about writing a letter in response, I did so for publication there. It has … Continue reading

Posted in Favorite Old Posts, Multiverse Mania
10 Comments

## A Cosmic Controversy

A couple months ago Scientific American published an article by Ijjas, Steinhardt and Loeb (also available here), which I discussed a bit here. One aspect of the article was its strong challenge to multiverse mania, calling it the “multimess” and … Continue reading

Posted in Favorite Old Posts, Multiverse Mania
53 Comments

## Fake Physics

2016 so far wins my lifetime award for most depressing and disturbing year ever (on the front of the larger world one reads about in the newspaper and elsewhere, personally things are fine, thanks). Perhaps the most disturbing thing has … Continue reading

Posted in Fake Physics, Favorite Old Posts, Multiverse Mania
61 Comments

## The Day After

The last few months have not been helpful for my sanity (and I think for that of a large number of other Americans). My three-point program to return to better mental health is to: Write one last blog post about … Continue reading

Posted in Favorite Old Posts, Uncategorized
Comments Off on The Day After

## Next Week’s Hype

Next week there will be a workshop in Munich with the title Why Trust a Theory? Reconsidering Scientific Methodology in Light of Modern Physics. It’s organized by Richard Dawid, to discuss his ideas about “non-empirical theory confirmation”, developed to defend … Continue reading

Posted in Favorite Old Posts, This Week's Hype, Uncategorized
54 Comments

## The West Coast Metric is the Wrong One

I’m trying to get back to blogging about quantum mechanics slogans, this one is about relativistic quantum mechanics. I’m hoping it will stir up more trouble than my last East vs. West one. If you’re doing calculations in relativistic quantum … Continue reading

Posted in Favorite Old Posts
61 Comments

## The NSA, NIST and the AMS, Part II

Last summer I wrote here about an article in the AMS Notices which appeared to make misleading claims about the NSA’s involvement in putting a backdoor in an NIST cryptography standard known as DUAL_EC_DRBG. The article by Richard George, a … Continue reading

Posted in Favorite Old Posts, Uncategorized
23 Comments

## Use the Moment Map, not Noether’s Theorem

For a fourth provocative slogan about quantum mechanics I’ve chosen: Use the moment map, not Noether’s Theorem. Pretty much every physics textbook these days explains the way symmetry principles work as: Start with an action functional, invariant under a Lie … Continue reading

Posted in Favorite Old Posts, Quantum Mechanics
25 Comments