On Mon, 18 Mar 1996, The Source of All Evil wrote:

> tls
> Mon Mar 18 04:53:13 EST 1996
> Update of /a/cvsroot/src
> In directory pain.lcs.mit.edu:/b/tmp/cvs-serv4046
> 
> Modified Files:
> 	Makefile 
> Log Message:
> a futile nod to ease-of-upgrade: make build now installs new rules from
> share/mk. 

Oh, no!

What happens if the rules use a feature that's not present in the
not-yet-upgraded make(1)?

This is a classic chicken-and-egg problem, but it seems to have been less 
likely to cause brokenness the way it was...

--scott