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Apparently neither can Facebook, if recent attempts are any indication.

• cuergas 14y ago
  Replicated is the wrong word. Superceded is maybe a bit better. Never say never my friend. These things take time.
  • jamesaguilar 14y ago
    I see. You get to baldly assert that SpaceX and Tesla are hard to copy, though few have yet tried, but when I point out that people have tried and failed to beat Facebook at their game, these things take time?
    • cuergas 14y ago
      Yes, fads have a certain lifetime. There is a long list of fad websites that shows this. I think the comparisons to SpaceX and Tesla are strange in terms of what those companies are _producing_ vis-a-vis a social networking website, but that's just me. If you see them as comparable base on what's being produced, carry on. Everyone is entitled to an opinion.