Sorry but I disagree
, being a PPL of a massive 75 hrs,and not having used all the new fangled-fly-the-plane-down-the-line GPS stuff, I can see exactly why the whizz wheel is taught. Firstly, it gives a good appreciation of the triangle of velocitys, crosswinds on runways etc, and many of the other calculations used in flying
It also gets your brain working, and by the very fact that it is an accurate guessing device, you automatically double-check yourself when you get an answer. I know that you should when using an electronic device as well, but I don't think anyone can say they have never just taken the answer off the screen as correct?
. As with everything, the whizz wheel has its place, just as GPS units do, and as far as i'm concerned is an invaluble and simple (once learnt) bit of kit that should be used