Sarge-built binaries running on Woody systems?

[Matt England <mengland@mengland.net>]

Sarge-built binaries running on Woody systems:

Is this feasible?

I'm not talking about package management...just the raw, binary.

Are dynamic-library-management tricks needed?  Does the Debian testing 
authority (or whoever is given responsibility of anointing Debian releases 
for distribution) make any attempt at backwards compatibility for this kind 
of stuff?

As per similar motivation for my previous redhat-on-Debian binary porting 
conversation:  I'm hoping that one Debian build will work on many Debian 
systems.

Can I at least count on a Woody-built binary working ok on a Sarge-based 
system?  In this context, how far "back" can I go to get "forward" 
compatibility?  (ie, how many revs before Sarge can I go back to "build on" 
and still get Sarge compatibility?)

If there are reasons why the answer is "depends" instead of a flat "yes" or 
"no": I would love to know these reasons.  This is what I'm specifically 
hunting for.

-Matt