I am pretty sure you are referring to Russ Ackoff's lecture about his time at Bell Labs: https://vimeo.com/148192220
(If you haven't already read it and are interested in Bell Labs, 'The Idea Factory' by Jon Gertner is worth checking out.)
(If you haven't already read it and are interested in Bell Labs, 'The Idea Factory' by Jon Gertner is worth checking out.)