I don't understand. How do you connect your last sentence to what you wrote before? You seem to say that there are situations where video calls would be approp

I don't understand. How do you connect your last sentence to what you wrote before? You seem to say that there are situations where video calls would be appropriate, there are, however, problems that make video chat not quite as good as face to face communication. Voilá, we just found the perfect niche for video chat: all those situations where face to face communication would be desirable but is impossible or too expensive. The technology is cheap and by now built into everything, let me just share this little anecdote: We regularly present the status of our bachelor's thesis to our Prof and one student couldn't attend in person so she just used video chat. The university didn't have to buy expensive equipment, we just used the projector that's standard in every meeting room and the Prof's old laptop with camera. It was not as good presenting face to face but far better than nothing at all or a telephone call. Nobody thought of video chat when building the infrastructure but now it's there and can be used at a moment's notice. This additional mode of communication crept up on us but now it's available and I think there are quite a few situations where its use is appropriate. (By far the minority but that's not really so important.)