HP and The Deathly Hallows

I've realized that if you read any Harry Potter books the second time you obsorb more information and details from the book.

I watched Harry Potter and The Deathly Hallows Part I a few months ago. The movie started with a whole bunch of death eaters sitting at a long table and the muggles teacher was floating in mid air, begging for her life but Snape ignores her. I totally forgot about that part being in the book. I thought whoever wrote the script for Harry Potter just added in. *sigh* When I started HP and The Deathly Hallows for the second time, I then realized that it IS in the book.

I guess that's why your teachers and parents always tell you to check things twice.