[jpollock]

Lots of things have been lost because people didn't consider them worth paper.

What is important ends up being very strange. Ephemera become _very_ important.

For example, how did women care for their hair during Victorian times? Did they wash their hair? What with? Lye soap is really strong, and they didn't have detergent based shampoos.

So, what did they use?

That example came to mind because it was the focus of one of the "live a while in the shoes of someone from time X" on TV. It was a huge thing for the women of the house to be able to care for their hair, and no one knew how it was done!

What we consider useless to keep now may become extremely important to a future historian.