Date:     6 December 1980 1644-est
From:     Bernard S. Greenberg       <Greenberg at MIT-Multics>
Subject:  Re: That 28 move Plummer Cross
To:       McKeeman.PA at PARC-Maxc
Cc:       Cube-Lovers at MIT-MC, DDYER at at MIT-Multics,
     Plummer.SIPBADMIN at MIT-Multics

The maximally distant point is definitionally symmetric. It was
Bawden (ALAN) who first stated this; were it NOT symmetric, there
would be some twist you could make that would make it WORSE
as opposed to the ones that would make it better. Were this
the case, it would then not be a maximum.