Intraspecies vs Interspecies communications. In fact we are alone.

If you get the chance, dive around a coral reef. The complexity of interactions between species is amazing. Of course, much more of the interactions are not visible, for example the symbiosis between corals and dinoflagellates. Of course, all other wild animals are constantly in exchange and relation with other wild species. In comparison, we modern humans, with how many other species do we interact on a daily basis? Mostly none, except for those who have a pet. However pets are adjusted to humans, and depend on us. So in fact, we're the only species who does not interact with all others. We're pretty alone - but so complex in our head that we are so much occupied with ourselves that we don't really notice how alone we are.