I agree - IFly is an awesome system!
I just have to sit back in amazement of how FAR we have come with regards to aerial navigation since I started flying in 1976, over 40 years ago.
Believe it or not, I learned to navigate using a SEXTANT back in the mid-to-late 1980's -- we were THRILLED when we could find our position within 5-7 nautical miles over the ocean or desert! I am so appreciative of all the hard work and development that has gone into this device!
We also used RADAR to find islands and coastlines. We USED to think this was accurate...now with IFly we are within meters!
"There I was was, navigating over the Med, using radar and celestial to get from mainland to island!"
This would have been a cinch with IFly, but then there would be no need for aerial navigators either!