[Infrastructures] state machines

[Wesley Craig]

On 19 Sep 2006, at 11:18, Brandon S. Allbery KF8NH wrote:
> On Sep 19, 2006, at 9:44 AM, Wesley Craig wrote:
>> Stated so generally, I think I can come up with counter examples.   
>> For instance, if you make a full disk image before pushing out a  
>> change, you can in fact "undo" the change, by restoring the backup.
>
> ...unless said change affects something other than disk ---  
> consider PC BIOS, or more significantly the SPARC/PPC "eeprom"  
> command.

Sure.  Think you can come up with a solution for that situation?   
State machines are just that.  If you are able to record the state,  
you can restart.  It's that simple.

:wes