Angels dancing on pins is an stereotypical criticism of scholaticism...utilized mostly by people who have never read Aquinas. As (I think) Jaki points out, this analogy had to do with Thomas' explication of higher mathematics and was quite influential in further Western scientific developments.
Angels dancing on pins is an stereotypical criticism of scholaticism
ninot writes:
...utilized mostly by people who have never read Aquinas.
I believe that he did consider whether more than one angel could occupy the same space at the same time. I think he answered 'no', not because they occupied space (which, not being immaterial, they did not), but
because two distinct causes could not each be the immediate cause of the same thing.