Hi.
You know better than me. What happens when magnetic north flip flops again? Have to renumber all of the runways?
Okay, I’m thinking the next disaster is Lang o leers...
5.56mm
If God, in his infinite wisdom, can save the migrating birds that depend on magnetic navigation to continue their species, I have no doubt that the flipping of the poles would pose no really big problems except redefining the directions. Money would have to be spent in re-programming people, books and machines but it could be done quickly.
What would be a big problem is if it was on the cusp of flipping for a long time and intermittently flipped like every day or two for years........................................