The word "you" doesn't always mean the person who you're directly speaking with. Sometimes it means "people in general" or "anyone".

Here are some examples of "you" used in a general way:

You need a solid foundation in basic math and science.

You can't beat face-to-face communication, you know?

In very formal English, you can use "one" instead of "you":

One is able to convey subtle nuances through face-to-face communication that are not possible to convey through other means.

This phrase appears in these lessons: