Good user input may seem a bit like a magical, mythical beast at times, but it is a very real and realizable goal. That said, the path to it passes through a minefield of miscommunication, misunderstanding, and unintended biases in thinking. But we can effectively navigate this with a human-centered approach and it is worth the trip, because the results can be nigh magical for your product and your users.
A powerful tool in our toolbox is the interview.