I found that too. I spend most of my day typing, not copying (we have cut and paste function for that ) so it felt awkward not only copying, but typing over it. Forced me to think about the letters, when normally when I type I'm not spelling out the words in my head, but rather just typing the words directly as I think of them. That's something that finger typers can likely never do - if you learned to type the traditional way, there comes a time when you stop spelling and your fingers just know where to find the letters as you are composing the text in your head. Sort of like being able to speak a second language without having to translate each word in your head first.