Narrator: It’s not normal behavior…
Although Apple’s statement is technically correct, the effect is normally not as noticeable on other LCD devices.
Speaking of which, other LCD Apple tablets with the same refresh rate, including the latest ninth-generation iPad, do not appear to have the problem, so, again, Apple’s explanation is a little hard to digest.
People who have already bought the device and find the issue annoying will do best to return it within the standard return period. Otherwise, they will have to learn to live with it. The problem seems more pronounced when scrolling through a text document, and appears to go away in the landscape orientation.