Take some managers: not every kind of manager is good for this experiment, you’ll recognize the good one reading this post.
Put them in a meeting room.
Tell you what you are doing: be specific.
After 2 minutes, the first manager will interrupt you and start saying that you are probably wrong and that he knows a better way to do it.
Then another one will disagree and tell you his vision.
Then another one will interrupt and tell everyone his particular experience.
After 60 minutes they will tell you to re-think about it and do another presentation.
I’d really like to start this kind of meetings saying: it is NOT necessary to have a brilliant idea in this meeting, please don’t feel obligated to demonstrate that you are the smartest guy at this table!
P.S. To tell the truth I know A LOT OF technical guys who suffer of the same disease 🙂