From: helbig@asclothestro.multivax.de   
      
   In article <34291c02-79e2-498a-b7b4-7a363c6d8f6a@googlegroups.com>, "Jay   
   R. Yablon"  writes:   
      
   > Suppose we are working on the basis of a wrong assumption regarding the   
   > matter that we actually know about and can detect. Particularly, suppose   
   > we are working on the wrong assumption that neutrinos attract all other   
   > particles gravitationally, just like all other particles besides the   
   > neutrino actually do. Moreover, suppose the neutrinos actually repelled   
   > everything else, which is what I found in the 2013 paper, and which fits   
   > with their rather squirrely nature.   
      
   > The broad way to pose the question is this: if neutrinos are actually   
   > gravitationally repelling rather than attracting with respect to all   
   > other particles, which I do hang my hat on based on what I found in   
   > 2013, how might that impact the dark matter problem?   
      
   As far as we know, inertial and gravitational mass are the same.  Are   
   you proposing that the neutrinos have negative or positive inertial   
   mass?  (If your theory isn't clear here, it is probably a shortcoming of   
   the theory.)   
      
   From energy-balance reactions, we know that neutrinos carry positive   
   kinetic energy (indeed, this is what led Fermi to postulate them).  So,   
   according to you, either they have negative gravitational but positive   
   inertial mass or you need much more work to understand radioactive decay   
   within the context of your theory.   
      
   Note also that, a while back, Steve Carlip noted here that, in the   
   "traditional" framework, positive mass attracts everything, including   
   negative mass, and negative mass repels everything, including negative   
   mass.  So your negative-mass neutrinos which attract themselves would be   
   an even bigger break with tradition than just negative mass itself   
   (which is also a pretty big break).   
      
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