The ideal situation, andragogically, is for all participants and resource people to be on one level, with nobody looking at the back of another (as in a circle), and with maximum flexibility of movement of chairs back and forth from a large circle to small circles. This ideal must be compromised somewhat when the numbers are too large or when visual aids must be used that everybody can see simultaneously. But the compromise need not be total, as has been imaginatively demonstrated at the Kellogg Center for Continuing Education at the University of Oklahoma (which, incidentally, was Planned by a team of architects and adult educators who expressly set themselves the Challenge to translate principles of adult education into bricks and mortar), where all small meeting rooms are hexagonal in shape, with hexagonal seminar tables, and where the auditoriums are bowl-shaped, with swivel chairs.