I think 'People gathered around might discover' in the following sentence is ungrammatical. It should be rewritten as 'People gathering around might discover' People who gathered around might discover.' Do you agree?
People gathered around might discover, in the documents coming off the machine, the writeup of a colleague’s project that’s relevant to their own work, or a new company policy that might affect them.
Source: Who Moved My Cube by Anne-Laure Fayard and John Weeks