Broadcasting a song and on-demand streaming is technically isomorphic. 1. Clearly on-demand streaming implies broadcasting. 2. Presumably I could turn a broadc

Broadcasting a song and on-demand streaming is technically isomorphic. 1. Clearly on-demand streaming implies broadcasting. 2. Presumably I could turn a broadcast into an on-demand radio stream by setting up a radio station which loops through all songs. Then I get into my rocket ship and travel away from Earth at near lightspeed and return, arriving exactly when the song I want to hear on-demand is being broadcasted. It's possible to approach zero latency for this method, depending on whether I stay in my rocket ship all the time and how fast I travel.