Twenty-first-century people don't find their way in the dark by looking up at the stars. They use GPS. As kids used to learn in science class, though, GPS itself goes all the way back to the earliest measurements of stellar movements and positions: Thus, at least in principle, 21st-century navigation still depends on the stars.
Nowadays, however, science teachers are having more and more trouble getting this concept across. The problem isn't that the concept is so hard to grasp. The problem is that the stars are so hard to see.