Is probably about being able to deal with all kinds of different people.
Because it's very likely to be the only thing that will be left once everything else will be done by algorithms, AI or whatnot.
What will make this skill even more valuable is the fact that this is the exact same skill that technology has helped us to unlearn over the past couple of years.
So how do you learn it?
You can't really learn it.
Especially not in a class room.
The only way to learn it is probably by trial and error.
And to then learn from your mistakes.
Which will make it even more valuable...