Perhaps his friends do not have smart phones, because they do not want smart phones.

Is the DUNE neutrino experiment really being constructed purely to keep particle physicists employed?

human is undoubtedly making connections and associations far more complex and expressive, but at bottom it’s all just “sound = thing”, no? 🤔

The understanding of this complex and expressive structure is significant because it allows you to convey novel or abstract information. You will not be able to explain what a walk is to a dog without a demonstration, while you will be able to do so (to some degree) to the unfortunate hypothetical person who have never taken one before.