I read a follow up study on orangutan vocalization a while back. The initial research into orangutan vocalization speculated that meaningful communication was taking place. One scenario was the vocalization that a member of a troop emits when it has lost the group. The follow up study that I recall recorded and analyzed the sounds in this situation. The conclusion was that the orangutans are not really communicating. Rather, the lost animal shouts in fear and the intact members of the troop carry on shouting amongst themselves normally. It might happen that the lost one hears the others, but the “speech” is not directed at achieving that outcome. Might be like one lost orangutan mournfully shouting his name, “Bob, Bob, Bob.” Over and over again. While the rest of the troop merrily shouts their own names “Jane” “Mike” “Chris” “Sue”. Internet communication can be similar to the discourse of orangutans.