Kev writes:

Yeah, eyes.

Not just eyes. You need a source of information. Without that, you won't
recognize anything. People overlook this sort of thing and then get in
trouble when they discover the hardware that an essential source of
information that they had previously taken for granted is no longer available.

Lots of people flew across the Atlantic with sometimes
just a compass, and they easily recognized the coast of England /
France / whatever with their bare old eyes ;-)

Just a compass? No charts or other aids at all?

It's true that if you start at certain latitudes and fly due east, you'll
eventually hit some part of Europe. That's essentially just throwing darts,
however.

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