The Internet isn't all juvenile

So much of what's popular on the Internet feels like it was written for and by 16-year olds.
And I'm sure some of that is probably true.
But, sadly, a lot of it is written by grown-ups trying to sound cool.

Quora isn't one of them.
It's popular. (At least, I hope it is.)
It's usually a great read.
And the answers on it are written by people who don't write like juveniles.

Here's an anecdote I read in an answer about good writing:

He was doing a film, and he explained to his writer that the beginning of the film had to show that this man had been married a long time and that he is kind of tired of it. He had gotten used to his wife and had a roving eye. So the writer brought him four pages of introductory exposition of character. Lubitsch looked at it and said, 'You don’t need all that.' He took all four pages out. 'Just put down this—the man walks into the elevator with his wife, and keeps his hat on. On the seventh floor a pretty blonde walks in, and the man takes his hat off.' 
-- Director Rouben Mamoulian (Love Me Tonight, The Mark of Zorro, Blood and Sand) remembering director Ernst Lubitsch.