There is a theory which states...

Hokeeeay…!

"There is a theory which states that if ever anybody discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable."

"There is another theory which states that this has already happened."

- DOUGLAS ADAMS -

Here is an example where the road-planner, quantity surveyor, builder and garden planner all had their say.

The problem is... they all said it at different timeslots.