Why didn't the Romans invent Photography?

The Romans could have invented photography, but never did. Why?

Why this question? In actuality photography could have been invented even before the Romans.

Check out this very interesting article:

http://www.grand-illusions.com/roman.htm

... and while you are on this site which is dedicated to illusions, check out the rest of this site.

http://www.grand-illusions.com