"Steven P. McNicoll" wrote in message
k.net...
Why don't you remove the "restriction" on division by zero

There are, in fact, methods for dealing with division by zero.

[...] or the "restriction" on perpetual motion machines.

I'm not aware of any arbitrary restriction on perpetual motion machines.
You are more than welcome to build one, should you happen across a method to
do so.

In any case, as far as genuine arbitrary restrictions go, be patient.
Eventually, we'll get to them all. But for the time-being, it's "one step
at a time".

Pete