I flew with a guy recently that had made cheat sheets of every route the company flies. He had ATC frequencies, all the navaids, courses, etc. If it was a new route for him, he was making up a sheet during the trip. If you would change the frequency after a hand off, he was already dialing a new frequency into the stand-by. What if I was given the wrong freq or dialed it in wrong? That last freq is gone. If we hit a burble of air, we were in "Moderate Turbulence!!!" and slow it to 210. Plus, he was dating the flight attendant. It made for a fun for day.
