[CobaltBlue]

As someone who worked in the printing business for many a year and owned my own publishing business, I can assure you that printing presses don't reproduce books, people reproduce books.

What comes out of a printing press isn't a book. It's sheets of paper that need to be folded, stacked, collated, bound, covered, cut, etc., etc., etc.

I promise you that nobody ever fed a book into one end of a printing press and got a similar book out the other! -g-

[AndrewC]

people reproduce books.

And cells reproduce virii. It is not complicated.(so far as the major steps are concerned)