Navigate and safely drive at the same time maybe? Which people were presumably not doing 500 years ago. When walking, you're in a lot better position to stop and get your bearings. You're probably also not walking as much to totally unfamiliar areas even if I did get myself a bit lost a few times when I was first in the area.

Not necessarily.

For example, landmark-based navigation is good in rural areas but not generally in cities (of today).

I believe there are studies on this, in fact.

> Makes you wonder what millions of your predecessors could do that you can't.

Millions of your predecessors died in ways easily preventable today.

"Let others praise ancient times; I am glad I was born in these." - Ovid