[mikeash]

I personally find a GPS unit (or, now, a GPS app on my phone) to be way more convenient than a map. Safer, too, since I can pay more attention to the actual driving.

[run4yourlives]

Sure, but the original point was about need, not convenience. Personally, I use google maps on my phone, since it's always in my pocket anyway.

[mikeash]

"Need" is a difficult word to work with, here. Do you "need" electricity? Your ancestors got by fine without it. Beyond air, water, and food, you don't really need anything.

[sliverstorm]

Also basic shelter. Often underrated when blocking out needs.