We need to build ABC, so that our client can do 123. Developers nod their head in confirmation that they understand what needs to be done. Been there before?

What usually follows is the lack of shared understanding between the team members, this means that everyone has their own idea of what ABC is and how it should get implemented. So being that the awesome development team understands what needs to be done, they go straight to implementation and after that all they’ll need to do is test the product and deliver to the client. Saving time right?