Well said. It is a good tester of knowing how clear the people understand the problem themselves. Many people (particularly non-science background ones, no offe

Well said. It is a good tester of knowing how clear the people understand the problem themselves. Many people (particularly non-science background ones, no offence) don't know which kind of data they should access to build a product and, even worse, whether they have access to the data. Not knowing the answer of this question = they do not know they are travelling on Titanic at best, if not a boat full of holes.