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Continue to ChatJust let the artist sign an empty canvas or a frame, with the inscription, 'I had such and such a concept in mind' for this work. The artist then need not bother with producing the work, and therefore need not be worried about being dis-satisfied. All he or she needs to do is to sell it to a collector. The collector will have the guarantee that the artist thought about the work, even if momentarily, and therefore be satisfied. - Semir Zeki from https://whatsmyquote.com/quote/just-let-the-artist-sign-an-empty-canvas-or-a-frame-with-the-inscription-i-had-such-and-such-a-concept-in-mind