CPT symmetry – Uncommon Descent

Cosmology Intelligent Design Physics

A symmetry the universe “must never violate”?

Sounds like a designed system all right. Too bad that’s a problem for many physicists.

Seversky If they find a black monolith, dimensions 1:4:9, let us know. – “‘Oumuamua is a spacecraft!” astronomer has...
doubter A collection of purported mysterious (alien technological?) objects already photographed on the Moon: https://www.pinterest.com/danielpure/mysterious-objects-on-the-moon/ . Mainly food for conspiracy theorists,... – “‘Oumuamua is a spacecraft!” astronomer has...
polistra The astronauts briefly explored six different places on the moon, and satellites have been scanning it at other times. If... – “‘Oumuamua is a spacecraft!” astronomer has...
JVL Kairosfocus: Which definition of warrant are you using? https://www.collinsdictionary.com/dictionary/english/warrant – L&FP 40: Thoughts on [neo-?] Reidian...
kairosfocus Jerry, as noted: the record is there for those who wish to see. I have adequate warrant and I will... – L&FP 40: Thoughts on [neo-?] Reidian...
kairosfocus JVL, there used to be regular musters for practice on the local green or the like. At Gettysburg, an old... – The Twin Peaks of the Second...
William J Murray KF @20: WJM, thermodynamics and energy flow. That’s why our world is temporal-causal, there is an arrow to time and... – Coyne Believes a Version of "Turtles...
William J Murray WLM, the general scientific consensus is that our physical universe began about 15 billion years ago. What perspective are you... – Coyne Believes a Version of "Turtles...
kairosfocus VL, 14 is more like it, it keeps bouncing 13.7 to 13.8 or so. KF – Coyne Believes a Version of "Turtles...
kairosfocus WJM, thermodynamics and energy flow. That's why our world is temporal-causal, there is an arrow to time and things happen,... – Coyne Believes a Version of "Turtles...
Viola Lee WLM, the general scientific consensus is that our physical universe began about 15 billion years ago. What perspective are you... – Coyne Believes a Version of "Turtles...
William J Murray VL said: We all know it had a beginning. No, we do not all know that. – Coyne Believes a Version of "Turtles...
Viola Lee re 13: I, and the general philosophical question, is not just about the physical universe we live in. We all... – Coyne Believes a Version of "Turtles...
William J Murray Mr Arrington said: They most certainly have not. This statement is based on a fundamental misunderstanding of the first cause... – Coyne Believes a Version of "Turtles...
Barry Arrington WJM The quantum eraser and delayed choice experiments have rendered the philosophical arguments about a linear-time “first cause” obsolete and... – Coyne Believes a Version of "Turtles...
JVL ET: If you can’t measure it, does it exist, scientifically? Excellent question! I have no answer. I think I'm far... – Coyne Believes a Version of "Turtles...
ET To get rid of those turtles all Viola or anyone has to do is come up with a coherent theory... – Coyne Believes a Version of "Turtles...
William J Murray The classical concept of "causal chains" has been disproved by quantum physics. What we are left with are two different... – Coyne Believes a Version of "Turtles...
Barry Arrington VL W hat is the nature of whatever next level of reality out of which our universe has arisen” We... – Coyne Believes a Version of "Turtles...
Barry Arrington VL But if there has “always” been something beyond nature, that just introduces another stack of turtles. No, it points... – Coyne Believes a Version of "Turtles...
Barry Arrington VL there is always another turtle Well OK then. Not just Coyne. – Coyne Believes a Version of "Turtles...