Stop reading! Quota exceeded.

I've just spotted an advert for Sony's new eBook reader. It starts off:

"160 books under one cover
Imagine having your entire book collection whenever, wherever"

Entire book collection? 160 books? I assume that Sony have performed extensive market research and concluded that's how many the typical reader owns. Turning my head, I can see at least that many on the shelves behind me. In fact, 179 - I just got up and counted them. Many, many more are scattered throughout my home. Do I read too much? I don't think so - I'm very aware of how many of those behind me I haven't yet read. 20, maybe 30? From heavyweight therapy tomes to escapist holiday reading, books are an integral part of my space.

A friend asked for some practical advice recently (as she does frequently on all sorts of matters). After I'd given her my thoughts, she said "How do you know all these things?"

Books. And, over the last 10 years or so, increasingly the web. And that's the fundamental difference between me and her. She's had - I forget how many husbands and children. She's explored the world in one way, I in another. My collection of books wouldn't fit on Sony's latest offering. But the fullness of her life can't be captured that way either.

There was a point to all this, but it quite escapes me. Now, where did I put that book on memory tips and techniques..?