So if you have 2 copies of the same book, do you have twice as much information?
If books were genes, then yes you would.
That is besides the point though because if you recall option 2 of the things that mutation can do:
2. Change existing genes
So if mutation could be applied to books you could have mutation that copy books, and then mutations that would turn books into other books. So you could duplicate Hamlet by mutation, and then another mutation could turn it into Romeo and Juliet.
But of course you are using the old creationist hat trick of extending the analogy. I never brought up books.
Have scientists ever observed a mutation that introduced new genes?
Yes they have and we even have some examples in humans. A mutation in the human population allowed certain people to have a new kind of hemoglobin. Before there were only 2 types A and S. A mutation allowed there to be another type called C which provides some resistence to malaria.
Other mutations in humans allow for increased resistance to heart disease. They were even able to track it down to the single indivual where the mutation first started.
THere is also the nylon digesting bacteria.
There have been experiments where lactose digesting bacteria had a gene removed which caused it to loose its ability to digest lactose. These bacteria were observed to re-evolve the ability to digest lactose in a different way.
It is observed. YOu just might not be getting answered from everyone because really, this question has been answered thousands of times on this forum. Most of the people who hear it though choose to stick their fingers in their ears and cry, "LALALALA". THen they either get hostile to the point that they are banned or they leave on their own accord.
Of course, biblical creationists are committed to belief in God's written Word, the Bible, which forbids bearing false witness; --AIG (lest they forget)