Apart from the particular technical knowledge an older guy may have, the accumulated human experience (this is, how to interact, trust, judge, understand, influence and work with other human beings) is always a very valuable factor that they may possess, for while technology changes very fast, basic human nature remains the same. In my country we have a saying: the Devil knows more from being old than from being the…
>the Devil knows more from being old than from being the Devil. brilliant. what's the origin there?
So, I wonder if it's just a universal Spanish proverb?