[Infrastructures] state machines

[Brandon S. Allbery KF8NH]

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.

-- 
brandon s. allbery     [linux,solaris,freebsd,perl]       
allbery@kf8nh.com
system administrator  [openafs,heimdal,too many hats]   
allbery@ece.cmu.edu
electrical and computer engineering, carnegie mellon university       
KF8NH