Without imagination we can go nowhere. And imagination is not restricted to the arts. Every scientist I have met who has been a success has had to imagine.
To me it's far more efficient to mobilize the imagination. It's far more efficient to hear a creaking step for example than to see the face of a monster which usually looks ridiculous and where you know that the blood is ketchup.
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I would find myself laughing and wondering where these ideas came from. You can call it imagination I suppose. But I was grateful for wherever they came from.