Introduction: Current tools and methods in architectural design do not allow predicting and evaluating how people will use designed environments before their actual realization.
Objective: To investigate how computational simulation can help in evaluating design proposals as far as their use by people is concerned.
Methods: Simulation of a medicine distribution procedure in a general hospital facility, while accounting for serendipitous social interactions made possible by the presence of different users in the same space, at the same time.