A powerful "no man" can be a valuable asset sometimes. I was involved in the design of an ASIC. This was going to be used by people from all different areas of the company, and they all had various demands. Most had never worked on a chip before, and didn't realize the cost of what they were asking for. The easy thing to do would have been to ensure that every requested feature was added But that would have burned ar…
Do we always listen to him? No. Does he always win? No. Is he always right? Absolutely not. But I keep him around because he forces everyone in the company to defend every idea. If you still feel good about the idea after defending it from him, then go ahead. If you've lost faith, then I'm glad we didn't waste any time on it.