Dr Karl

It's just the mediocre or average dividing range.

It's not great.

It's just average.

Do you remember how you remembered that or where you learned it from?

Yes.

About two decades, I saw this book in a shop called something about building another mountain range on the border of Western Australia and Northern Territory and South Australia to change the weather patterns in Australia.

And the guy had worked out the numbers and said that for a reasonable percentage of Australia's annual GDP, we could actually build a mountain range and then change the weather patterns in Australia.

And so we'd be lush in the middle of Australia other than elsewhere.

It's an interesting metaphor.

But actually I did follow the dentist as they did their work and I had very little plaque on the left and right side of each tooth.

But I had a bit on the front and the back and that would then mean I'd have to double.

the amount of strokes, and so have the dental floss going around the back of my teeth for 10 strokes, up and down, and then around the front of my teeth, which means I'd have to have both my fingers inside my mouth.

Yeah, but it's not my...

I've got to a level where the dentist loves my gums, so I'm very happy.

Yeah.

It's weird.

I remember way back when I was a very junior doctor, I was admitting this 92-year-old woman who had perfect teeth.

And I said, man, how come your teeth are so good?

And she said, ever since I was about five, I followed my mother's advice to use a bit of silk.

between my teeth.