Out of the mouths of

Out of the mouths of babes
While driving yesterday with my two girls in the back of the car I was yet again stretched by my four year old's uncanny questions. She noticed the clouds clearing and the sky becoming blue in patches and asked;

Why does the sky become blue Daddy?

    Well because as the clouds move away you see the sky behind them and that blue sky goes on and on forever.

I thought I'd answered that one in a reasonably accurate, not too boring way. But then she really caught me out....

What was the world like when it began Daddy?

    It was like a big rock with nothing on it. Then the water came and the oceans grew, plants began to grow, animals started arriving and eating the plants and then the humans arrived.

Were the humans eggs before they arrived Daddy?

    Yes darling - you could put it that way.....