Little Thinkerphilosophy for children

Who Am I · ages 8–12

Is imagining something real?

You can only imagine things you've seen. Is that true of you?

Try to imagine a colour you have never seen. Most people can hold a space where it would go, but not the colour itself — what shows up is a mixture of ones you know, or a vague gap. That is Hume’s point, and it is surprisingly hard to beat.

His claim was that every idea is a copy of something you have experienced, thinned out but not invented: a golden mountain is a mountain plus gold, both of which you have met. Nothing genuinely new can be conjured. If he is right, imagination is not creation but recombination — which would explain why every distant alien in every story has a head and eyes, and why it took centuries for anyone to think of life as a thing that need not have a body.

There is something imagination does that is harder to explain than recombination, though. You can imagine being someone else — noticing how it would feel to be them, wanting what they want. That is not simply photographing and rearranging. Warnock argued it is a basic capacity we use constantly, not a special talent, and that without it a person could not plan, or forgive, or understand anyone.

Which leaves the question that makes this a philosophical rather than a psychological topic. An imaginary friend, a story you invent, a possible future you rehearse — none of them exist, and all of them change what you do. Whether that counts as real is mostly a question about what you mean by the word, and it is one of those cases where the ordinary use of a word is doing more of the work than anyone notices.

Try it

Imagine a colour nobody has ever seen. Then notice what you actually did — mix two you know? Describe a place made of everything you know plus one impossible thing. Where does the impossible part come from?

What do you think?

Do you think there is a right answer to this question?

Talk about it

  • Where do imaginary friends come from?
  • Can imagining something hurt you?
  • Is a story you invent less true than one you remember?

Yes, but… — the arguments people actually make

  • Imaginary things don't exist, so they're not real in any sense.

    Then the money in your account does not exist either, since that is a set of expectations held by people. Real is doing more work in your sentence than you may have noticed.

  • Everything you imagine is made of things you've seen.

    Hume's claim, and it is hard to find a counterexample. Try to imagine a completely new sense — a taste you have never tasted, with nothing borrowed from any other taste.

  • Imagining isn't doing anything, so it's a waste of time.

    Every finished thing was imagined first, and you rehearse difficult conversations before you have them. Its usefulness is why it evolved, not a reason to excuse it.

What other philosophers think

  • David HumeArgued that every idea is a faded copy of something you have perceived — so a golden mountain is a real mountain plus a real gold, with nothing new added.
  • Jean-Paul SartreStudied imagining carefully and found that it is not a blurry perception: when you imagine a friend, they are present and absent at once, which is unlike anything else.
  • Mary WarnockArgued imagination is not decoration — it is how we come to understand other people and possible futures at all.
  • René DescartesNoticed a difference between imagining a shape and merely understanding it, and used it as part of his argument that the mind is not the body.

If you want to go further

  • A Treatise of Human Nature — David HumeThe copy principle, and the argument that all ideas trace back to impressions.
  • The Imaginary — Jean-Paul Sartre1940. A detailed study of what imagining actually is, as a state of mind.
  • Imagination — Mary WarnockA short, clear book on why imagination is central to thinking rather than a hobby.

Most of these were written for adults, which is why it is worth reading them with someone older.