Through the centuries, tens of thousands of copies and thousands of translations have been made (transmission), which did introduce minute errors. Because there is an abundance of existing ancient Old Testament and New Testament manuscripts, however, the exacting science of textual criticism has been able to reclaim the content of the original writings (revelation and inspiration) to the extreme degree of 99.99 percent, with the remaining one-hundredth of one percent having no effect on its content (preservation).