I just came across that section in my Sporty's ground school course (I have a PPL, but am getting back into the game after a long time away, so I'm starting from the ground (school) up), and it made me wonder. It almost seems like these days that VOR is the backup for the GPS (and like many of you, I use the panel-mounted GPS, and then ForeFlight as the backup GPS). But does anyone still use the really old nav stuff? I feel like I *should* learn it, just because, but then back when I was flying before, I promptly forgot all about it once I got my license. Ultimately, is it still valuable to have that knowledge, or do you believe we've moved on?