By the way, what is your theory as to what causes the Earth's magnetic field? Or to put it another way, what generates that field? You indicate that it is generated by the movement of the liquid outer core around the solid inner core. I think that is probably correct.

We can generate a similar flux field in our electronic devices by rotating an armature.

So...why would the Earth's magnetic field decline radically? Or strengthen radically? And why would it reverse itself?

The only way I know of that you can reverse the polarity of such a field in one of our electronic machines is to reverse the direction of rotation of the armature.

Think about that for a minute or two. A reversal of the polarity of the Earth's magnetic field seems to suggest that the planet would need to rotate in the opposite direction!

And a number of ancient myths and symbolic tales speak of events occurring where a day lasted about 3 normal days...or a night lasted 3 normal nights...after which the sun rose from the opposite horizon and days and nights went back to a normal length. That would happen if the planet stopped rotating for 3 days, then began rotating in the opposite direction. And if that happened, I don't doubt that the polarity of the Earth's magnetic field would reverse itself!

It's one more of a number of interesting possibilities regarding the behaviour of our planet, and it is suggested by a whole bunch of ancient tales that have come down from very old sources in different parts of the world.

If there were quite lengthy periods of stability between those widely separated catastrophic events...periods of many thousands of years...then it wouldn't be the least bit surprising that people would soon get used to the idea that "things only change very gradually"...because that would be the only thing they'd ever personally witnessed or had recent accounts of . And they would soon think that tales of catastrophic change in the distant past were nothing more than "mythology", wouldn't they?

Nothing sticks in people's heads like the familiar status quo. Until it changes.

I bet it would take only about 10 (or less) generations for people to pooh-pooh and doubt stories that were passed on about a global catastrophe that their ancestors had lived through. Like the farmer who had never seen a giraffe, they'd say: "No way. I've never seen anything like that, and no one would be so foolish as to believe anything like that." Thus does the conventional mind automatically reject anything that lies well outside its common set of assumptions...rather as a conventional religion automatically rejects anything that lies outside its established dogma.

The reaction is the same in both cases....strict adherence to familiar and accepted dogma.

Sometimes something happens that completely overturns an accepted dogma...whether in religion OR in science. And when it does, people are very surprised and very disturbed about it. But they still have to deal with it anyway, because it's reality, and their dogma is just a set of familiar ideas they're grown up with and taken for granted.