Phixius

Corrected entry: The established continuity of traveling through fireplaces tells us that to do so, one must throw floo powder into the fireplace you are using, then state your destination. However, during the battle between Voldemort and Dumbledore, Bellatrix Lestrange simply crawls into a fireplace and leaves. Even if she didn't care about her destination, she still skipped the important first step- the floo powder was never thrown in.

Corrected entry: During the scenes where "Dumbledore's Army" are practicing their spells, at one point they are using the spell 'Levi Corpus'. It is not until the next book (The Half Blood Prince) that this spell is actually discovered and used.

Corrected entry: In the scene where Mrs. Figg is bringing Harry and Dudley home after the attack of the Dementors, she speaks about "the boy who was killed last year". Actually it is summer so Cedric died only a few weeks ago.