When I said that one residential college might do for several departments of my independent university, I was thinking that it might do if only the most senior people lived in the residential college, and there might be some people from outside who evidently accept for themselves that they should be able to live without domestic and other ancillary staff, and apparently expect us to pretend that we can do so as well.
But really all personnel, however junior, should be able to live in a hotel/residential-college/stately-home environment so as to apply its energies as efficiently as possible to the work of the organisation.
I should like to correct what I said before. If we started with one research department, say theoretical physics or neurophysiology, and then added another, we would need to add to or enlarge the residential facilities, fully to cover the needs of all personal.