What's cool to you might not be cool to the next person, so make sure you really have a good idea what is in, and what is out.
Never underestimate the kinds of petty lengths people will go to in the workplace environment to make their power known, or get back at a particularly insufferable coworker. This collection of petty power moves are as impressive as they are just terribly petty.
Life looks a lot different now than it did even twenty or thirty years ago. As recently as fifty years ago, even scientists had a hugely different idea of how the world worked. And a hundred years ago? Screw that, no one wants to live in a world without functioning toilet paper or high fives. On the flipside, there's also tons of stuff that's way older than people think.