Training maybe. But humans are too much social animals for meetings (we already have setups with HD tvs, cameras, and high bandwidth connections and still fly to and from, almost as if being able to do so, or demand that they come to you, is a show of force and status) and presentations (never underestimate the value of the mingling that happens before, during and after a presentation) to happen remotely, unless we are talking some kind of sci-fi holographics.