Think you can validate your new product concept with customers and avoid confirmation bias? Good luck with that. In your last performance review, did you agree with your boss’s praise more than his criticism? If so, you may not have overcome confirmation bias quite yet.
So if you want to avoid innovation malpractice, you need to stop leading the witness in interviews. Let them lead you to what really matters to them. My suggestion: Focus your customer interview on their desired outcomes. Then just check afterwards to see if their outcomes are a good match for your intended solution.
More in 2-minute video, Give your hypothesis the silent treatment