I've worked in mapping software and GPS in some capacity for 20 or so years, and Null Island is always my go-to example of why it's bad to use an actual valid value for a variable as a default-initializer, as a sentinel value, or as a signal for "invalid". 0,0 is a real location and should not mean anything special besides "that exact location in the Atlantic" to your code. There are an infinite number of actually invalid lat/lon pairs, if you really, really need some constant that gets interpreted as "an invalid lat/lon". 0,0 is not one of them.
I always joke that if nuclear war ever broke out, that spot in the Atlantic is going to bear the brunt of the explosions from all of the poorly-coded computer systems firing the missiles.
BWStearns
There was a drone that had a new return home failsafe mechanism (for when there's low battery or some fault etc). Unfortunately it was possible to misconfigure it so that home was not set and the failsafe was still armed. This led to several drones perishing in the Atlantic as they bravely tried to fly home to Null Island.
Dwedit
This is very similar to the geolocation systems where whenever they had no information other than "United States", they pointed to a specific farmhouse in Kansas. Unwanted visits from Police, FBI agents, and people seeking revenge.
audiodude
Philosophically, you could make the argument that it really does exist.
I always joke that if nuclear war ever broke out, that spot in the Atlantic is going to bear the brunt of the explosions from all of the poorly-coded computer systems firing the missiles.