What's wrong with doing that? Seems reasonable to me. :tongue:this not a really good one neither : a physicist and a mathematician have to solve a problem for a peasant. He wants to make a park for his sheep as optimized as possible.
The physicist comes and make a circle fence saying this is the biggest area for this length of fence. The mathematician take 3 sticks and put them around him and then says : i define the exterior as the place where i am so the sheep are inside the fence.