There is a forest in Germany with deer. Before unification there was a barrier and electric fence cutting it in half so part was in West Germany and the other in East Germany.
The barrier has long since gone but the deer still will not cross where the barrier was.
None of the deer now are old enough to remember it being there, it's like the deer have a superstition about the ground where the barrier was.
Sat Nav - I can be in my car and get a signal from space telling me there is traffic ahead on a particular road.
And that for the satellite time is passing at a different rate to Earth so has to be 'corrected'.
@aWeaponCalledtheWord
I'm not sure if this will help.
Get some squared or graph paper. fill in some of the squares to make a pattern.
Now get a second person with another piece of squared or graph (the same as yours nut plain) they can't see your paper.
Now starting at the top left go along your paper, if the square is filled in saay 'dot' if it isn't then say 'dash'.
The other person fills in the square when you say 'dot' and leaves the square blank if you say dash.
Your pattern should appear on the other person's paper.