The hardest part of talking with experts is to make sure they answer the same question as you want answered.
"How quickly can we get something that more or less works for a demo?" is very different from "When will this be ready for mass production?" They can't read your mind and often to consider context you are not even aware of.
"How quickly can we get something that more or less works for a demo?" is very different from "When will this be ready for mass production?" They can't read your mind and often to consider context you are not even aware of.