From: friend@logictophysics.com   
      
   On Tuesday, December 31, 2019 at 5:04:03 AM UTC-5, Jos Bergervoet wrote:   
   > But what question is there about them? Aren't they just derived   
   > from the choice of field theory?   
   >   
   > I'd think that the path integral merely is a way to compute the   
   > time evolution from a state [*] at t1, to a new state at t2. And   
   > it does this by summing over all paths weighed by the complex   
   > exponential of the action, which by itself is derived from the   
   > Lagrangian density, which is fixed by our choice of field theory.   
   >   
   > So it adds nothing more than a mathematical tool, comparable to   
   > doing a lattice calculation, which would also just have to stick   
   > to whatever field theory we choose to describe the universe..   
   > Jos   
      
   But this all begs the question as to where the fields come from to   
   begin with or why the Lagrangian or where the path integral comes   
   from. I think my construction derives all these things. Accordingly,   
   the quantum field arise directly from spacetime itself, precisely   
   because the points of spacetime coexist in conjunction, leading to   
   implication between all points. And number of ways these implications   
   can be combined and how the implication between implications, etc,   
   can be combined is what forms the various kinds of particles of   
   physics. I show this at:   
   http://logictophysics.com/StandardModel.html   
      
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