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At Multiverse Impasse, a New Theory of Scale

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Re: At Multiverse Impasse, a New Theory of Scale

#141

There's a very subtle undertone of negativity in this article about physics. Before I get into, William Bardeen is not in the same league as 'Surfer Dude and his E8 Theory of Everything' which throws basic facts about representation theory out the window, coming up with 'todalay boogus' arguments which amazes auntie, mommie and magazine editors but a real physicist would instantly dismiss. Bardeen is the real deal. H…

Surfer Dude and his E8 Theory of Everything ... 'todalay boogus' arguments which amazes auntie, mommie and magazine editors but a real physicist would instantly dismiss. I suppose you're referring to Lisi? Neither he nor E8 were even mentioned in the article. You're both OT and unnecessarily unpleasant.

Well there is no way Lisi's E8 theory can fit gravity and the standard model at the same time. At first glance the group structure seems to allow it but the actual group representation (which are the actual particles allowed if one wishes to construct such a theory) don't allow it. I'm totally fine if someone wants to pursue this area of research the problem is the MAGAZINES have printed his theory as though it were a valid contender or alternative to string theory or some other theory. Lisi's theory isn't. If it were a plane, it never got off the ground, it blew up on the runway. A recent TIME magazine special issue features this broken 'theory'. It's deeply misleading and shows a lack of concern about misleading the public. Loop quantum gravity, simplicial quantum gravity, and causal sets etc. are all examples of broken theories that just don't work. Just so you know there ARE valid alternatives to superstring theory regarding unification or physics beyond the standard model. Alain Connes non-commutative gravity, superconformal field theories, Kac Moody algebras, twistor gravity, twistor string theory, plain old N=8 D=4 supergravity is a contender, SO(10), SU(5), MacDowell Mansouri gravity, matrix models,... I could list more. These theories aren't broken, they actually work. Those are the kinds of things the public deserves to hear and read in the magazines.

Re: At Multiverse Impasse, a New Theory of Scale

#142

Earlier quoted context omitted.

>They're doing the experiment because they already believe things are this way and they're trying to get evidence to confirm it. Hypothesizing is one thing, but to believe without evidence is just blind faith.

Isn't faith blind by definition?

No. One of the most commonly used definitions of faith is trust or confidence in a person or thing. Whether or not that trust or confidence is based on evidence or not is a separate matter that is not conveyed by the word.

Even in the case under discussion, that someone might have faith that something is a particular way, and are doing an experiment to confirm it (more likely disprove an alternative), that doesn't mean it's 'blind' as in without reason. People can have a lot of good reasons for believing something is a particular way without having measured it directly yet.

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