You're gonna need a bigger boat? How can that relate to Engineering?
Firstly, let me ashamedly admit, that I've never seen the whole of Jaws all the way through. It's on my list of films to watch, but whether I get round to it, is another matter!
Anyway, to apply this to engineering, it's almost like "you're gonna need more testers/developers"...
We hear this all too often when trying to push releases out the door, let's throw men at it... However, as we all know, a bigger boat/more men... isn't always the answer, it's not a guarantee of quality, or even a guarantee of getting things done quicker.
If you have a task that will take 2 hours, simply having 2 people work on it doesn't mean that it is halved, in fact often, the time taken to do the task remains at 2 hours, but the maintainability and the knowledge around that area is increased, so it's a price, in my opinion that is often worth paying.