backdoor commute

[AntonioLao]

Dirac could be considered as the father of quantum electrodynamics (QED). He was first to apply operators for energy solutions in quantum mechanics (QM) and demonstrated that they are equivalent to Heisenberg’s matrix mechanics (MM) and Schrödinger’s wave mechanics (WM). He developed a quantum statistics bearing his name (Fermi-Dirac) and describing one kind of fermions occupying the same quantum state. In contrast, Bose-Einstein statistics describes many kinds of bosons occupying the same quantum state. Their classical limit is Maxwell-Boltzmann statistics.

The irony of many successful theories is the unwillingness to go back where they started even though logic suggests otherwise. Gravity (Newton’s version) was discovered first but now it (Einstein’s version) is the least understood. MM was first invented to explain nonzero Poisson brackets. However, natural ones are predominantly zeros implying an assembly of Abelian groups. It is often said in some familiar arguments that ‘once you walk out the front door, you can’t ever come back’ but could suggest that ‘through the backdoor, you can go in and out anytime’. Both Dirac and Einstein vacillated till the end whether they should walk in the backdoor without fear of being ridiculed. Einstein could never accept probability while Dirac could never accept renormalizability in any theoretical formulation.

[mkirkpatrick]

Absolutely so,there is no shame in relooking,the back door can often reveal clues that
were not spotted the first time.We can journey far from our source,get confused,retracing
our footsteps is often the wisest thing to do.




regardsmichael.

[AntonioLao]

retracing our footsteps is often the wisest thing to do.

For Dirac and Einstein, their reluctance have a lot to do with professional pride. As for Feynman, he was asked about reliving his life and he said it would be boring.

[mkirkpatrick]

For Dirac and Einstein, their reluctance have a lot to do with professional pride. As for Feynman, he was asked about reliving his life and he said it would be boring.

I can understand that,however its not about reliving ones life is it? It is about retracing
our footsteps,and seeing if we have prehaps overlooked some vital (but unnoticed) piece
of information.



regards michael.

[AntonioLao]

It is about retracingour footsteps,and seeing if we have prehaps overlooked some vital (but unnoticed) piece of information.

Is this the same as double checking our calculations?

[mkirkpatrick]

Is this the same as double checking our calculations?

Up to a point yes it is,but would maintain further to this,it is about thinking through the
process that leads to the present conclusions,then seeing if any insightful additions present themselves,and if so,reconfigure our plan.



regards michael.

[mkirkpatrick]

We need ever be watchful,for while we are looking at the front entrance,a virus is slipping
in the back door,that is why we need eyes in the back of our head!



regards michael.

[AntonioLao]

that is why we need eyes in the back of our head!

Useful if only the visible band of the electromagnetic spectrum is the only means of seeing. The mind can see the full range of the electromagnetic spectrum. http://images.google.com/images?q=el...mages&ct=title

[mkirkpatrick]

Useful if only the visible band of the electromagnetic spectrum is the only means of seeing. The mind can see the full range of the electromagnetic spectrum. http://images.google.com/images?q=el...mages&ct=title

The minds eye,is much more potent than the physical eye,in truth,the physical eye is
blind by comparison.



regards michael.