Why great-grandparents are great

Great-grandparents are wonderful because they knew your parents while they were kids, and they remember things about your parents that make you laugh and laugh and laugh. Here's a memory Jeff's grandmother emailed me about Jeff's father, Graham:

I remember how Graham used to try so hard to keep up with John - 2 years his senior - in everything he did and generally succeded and did things much earlier than John did. He was more experimental and I still remember the day he lit a fire and put in all his plastic toys (plastic was quite new then) and watched them burn. His first bike was used to see how hard he could hit a lamp post and it ended up out of reach for some time.

Isn't that just a classic?