Keith Perhac mentioned in a podcast that a client told him he accomplished more in three days than the client had accomplished in six months. That sounds like hyperbole, but it’s actually plausible.
Sometimes a consultant can accomplish in a few days what employees will never accomplish, not because the consultant is necessarily smarter, but because the consultant can give a project a burst of undivided attention.
Some projects can only be done so slowly. If you send up a rocket at half of escape velocity, it’s not going to take twice as long to get where you want it to go. It’s going to take infinitely longer.
Related post: A sort of opposite of Parkinson’s law