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  • Aaron Wolfson thinks this is interesting:

This is important because when you ask somebody to imagine something and then ask them if they would buy it, they answer by telling you whether they would buy their ideal imagined solution, not your actual product. Consider the above example. You might have bought something that fit your ideal product that would help you lose 10 pounds. You almost certainly wouldn’t buy the real product.

From

Cover of UX for Lean Startups

Note

Ideas are abstractions. You need to test real things.