Original thought
Humans can never have it. That occurred to me today. In the same way that we can never dream up a colour that doesn't already exist (can you think of a colour that doesn't already exist?), we have an unavoidably limited...OK I say "original thought", but I suppose I really mean imagination. If you try and think of the most fantastic, amazing, imaginative *thing* you can think of, none of it will be original. It will instead be a creative combination of elements that already existed. Let's say I try to imagine "Heaven". Great pearly white gates, angels playing harps, perched on fluffy white clouds, rainbows and choral music. It might be an original *combination*, e.g. "pearls" and "gates" = pearly gates, but "pearls" and "gates" are not original ideas. In the same way, the common perception of aliens are "little green men", which are "little" (unoriginal idea), "green" (unoriginal idea) and, of course, "men" (the most unoriginal idea). Imagination is not the ability to create, but the ability to mix and match creatively. There can never be pure fantasy, only rearranged reality.
Of course, on the other hand I do realize it takes some imagination to come up with brand new inventions or brand new ideas, so before you all poke holes in my theory, all I'm saying is that pure fantasy can't exist because ultimately imagination is limited by experience. It's just like you can't dream of something you've never experienced in some way. Draw what you want from that.
Pete and I set ourselves a project today to conquer every tall-building-rooftop in KL. The score is currently at 3 out of 1 bazillion. This should be fun.