If you don't know the answer you can always use it as an oppurtunity to ring Grandad, Aunt Polly or anyone else who might know and build some relationships. Or as an oppurtunity to teach him how to research and learn things - go on a trip to the museum together to find out or go to the library or even look it up online.

Yasin keeps asking why is it up? About everything..... the ceiling, the trees, the sky, the clouds, the planes..

Kristy, my brother once asked Mum if she had lived in the olden days? lol.