"Peter R." wrote in message
...
Mike Granby wrote:

Do any of you "slippery slope" gentlemen ever exceed the speed limit on
the way to the airport?

One could argue that the speed limit is a lot more of an arbitrary number
than an aircraft's gross weight figures.

I believe you would lose that argument. Many a gross weight is set by the
marketing department so the plane performs to a competition beating
specification rather than some engineering requirement.