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Mar
19
comment Why do people still talk about bohmian mechanics/hidden variables
@MBN: It's good to have a diversity of views and opinions… but Science is not exactly 'democracy', in the sense that there's a clear direction which is preferred: you can't choose to not "believe" or to have a "diverse opinion" about $2+2$; you can't have a "loud vocal minority" that doesn't endorse nor subscribe to basic arithmetic. On the other hand, it does take time to establish some facts across a large community, and all one can do is keep on teaching.
Mar
19
comment Why do people still talk about bohmian mechanics/hidden variables
If the answer is informative, hopefully there's something to be learned from it — in which case my opinion is unnecessary: as the Marines say, "everybody has one and they all stink". People do stuff for all sorts of reasons… but, with some luck, after some time these things get sorted out in sciences…
Mar
19
answered Why do people still talk about bohmian mechanics/hidden variables
Mar
19
awarded  Critic
Mar
10
answered Is causality synonymous with continuity?
Mar
10
revised Can Gravity be described in terms of velocities and rotations of local Minkowski space?
Added the bit about the Equivalence Principle.
Mar
10
answered Can Gravity be described in terms of velocities and rotations of local Minkowski space?
Mar
10
answered Time as a Hermitian operator in QM?
Mar
10
awarded  Nice Answer
Mar
9
answered Gravity theories with the equivalence principle but different from GR
Mar
9
awarded  Quorum
Mar
9
answered Rigor in quantum field theory
Mar
8
revised Explaining Arrow of Time with Entropy
added 169 characters in body
Mar
7
comment An alternative, algebraic way to introduce interactions. Are there other ways out there?
@Peter: can you expand a bit your comments about the Buchholz-Lechner-Summers? I'm not sure whether we're both make the same reading of that paper.
Mar
7
answered Explaining Arrow of Time with Entropy
Mar
7
answered Is there an accepted analogy/conceptual aid for the Higgs field?
Mar
7
awarded  Citizen Patrol
Mar
7
answered Why does dilation invariance often imply proper conformal invariance?
Mar
3
comment How does gravity escape a black hole?
Sure, you're probably right. But, i'd rather not use any more than i have to (in terms of assumptions or extra estructure): if you can answer with some sort of 'minimum' set of assumptions, why 'complicate' the problem — and have to deal with the consequences of said 'complications' later? ;-)
Feb
15
comment How does gravity escape a black hole?
@Daniel Grumiller: In more general grounds, you don't need to agree with nor anyone else. But, in this particular case, the reason is pretty straightforward: because it's possible to answer the original question without having to talk about a possible quantization of GR. To appropriately and scientifically answer the original question, taking gravitons into account, sooner or later one would have to compute the scattering of light by gravitons (and vice-versa), which would immensely complicate an otherwise simpler answer.