I think it’s interesting that the speed-up coincides with the proliferation of personal computers and the internet. Imagine all the magnetic moments generated by every electronic device on the planet. I wonder where the magnetic poles will end up?
I don't know enough to have an informed opinion but I'd have thought all the electronics on earth would still be an order of magnitude to small to have an impact on something as massive as the earths rotating core.
"There have been 183 reversals over the last 83 million years. The latest, the Brunhes–Matuyama reversal, occurred 780,000 years ago, and may have happened very quickly, within a human lifetime."
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[ 3.5 ms ] story [ 16.1 ms ] thread"There have been 183 reversals over the last 83 million years. The latest, the Brunhes–Matuyama reversal, occurred 780,000 years ago, and may have happened very quickly, within a human lifetime."
https://en.m.wikipedia.org/wiki/Geomagnetic_reversal