four-quadrant problem

[alexis%yummy@gateway.mitre.org]

It was long and had nice pictures, but not correct ...

Before someone else catches it (I based part of my message in part
on old notes that counted layers different):
   a) You can't do the four-quadrant problem with two layers ever
	(even for a finite distance)
   b) You can't do "any finite number of finitely complex items" with 2-
	layers, you can often do lots, but a counter example is (a) above.

This makes the DARPA report even more certainly wrong, but in also
puts me in a glass house to some degree ...

alexis