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Cameras can't see anything that doesn't interact with the electromagnetic spectrum, but most people see things that don't physically exist from time to time; th

• krapp 7y ago
  >but most people see things that don't physically exist from time to time; they're called dreams or hallucinations, depending on context. Yes, and that's what ghosts are, figments of the imagination and thus not real.
  • DougN7 7y ago
    That’s my point though - so far dark matter only exists in equations (and our imagination) and isn’t real (that we’ve been able to prove). It’s got as much proof as ghosts. That will surely change but we’re not there now.
    • krapp 7y ago
      > so far dark matter only exists in equations (and our imagination) and isn’t real (that we’ve been able to prove). It’s got as much proof as ghosts. Incorrect... there is plenty of evidence for dark matter beyond "equations and our imaginations[0,1]," and certainly more evidence for dark matter than for ghosts. [0]https://medium.com/starts-with-a-bang/five-reasons-we-think-dark-matter-exists-a122bd606ba8 https://medium.com/starts-with-a-bang/five-reasons-we-think-... [1]https://en.wikipedia.org/wiki/Dark_matter#Observational_evidence https://en.wikipedia.org/wiki/Dark_matter#Observational_evid...
  • kd5bjo 7y ago
    > figments of the imagination and thus not real Physics doesn’t have exclusive domain over the term “real.” Dreams and hallucinations belong primarily to Psychology, but they are real phenomena that we can and do study.