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This is silly. Everything exists “only in our brains”. The ancient Greeks knew this - see Plato’s Allegory of the Cave.

• 4ndrewl 2y ago
  You don't only exist in my brain.
  • svantana 2y ago
    That sounds like something one of Plato's cave dwellers would say.
  • Carrok 2y ago
    Are you sure about that?
    • Jensson 2y ago
      Are you just a text message? I don't think my brain generates all the text messages in the internet, it isn't that creative.
• dboreham 2y ago
  The article says this (and pretty much all the other comments here). It doesn't however mention James Clerk Maxwell who took a break from inventing equations to torture EE students forever to figure this stuff out, including making the first color photograph. (Yes I know Heaviside actually came up with the equations we use)