Seems like you're losing something here -- ISTM that the goodness of a reified massage is now lost. A message, as a piece of data, can be tested, stored, passed

Seems like you're losing something here -- ISTM that the goodness of a reified massage is now lost. A message, as a piece of data, can be tested, stored, passed on, etc., while a "call" (the .get()) cannot.