The context here is software development, but this description , cited by Dave Winer, of the difference between Formats and Protocols is excellent - and is even more generally applicable to wider meanings of the words. They can only give you answers.
Experts are addicts.
They solve nothing. They are servants of whatever system hires them. They perpetuate it. When we are tortured, we shall be tortured by experts. All claims of responsibilities to shareholders are nothing more than respect for bets people have made.