.... you often use present tense, and in real life, we don't use that very often. .....
http://groups.google.com/group/alt.usage.english/browse_thread/thread/78b190dec1711976#
E.W:
"But in the third sentence, the author has hocussed himself into believing
that the magic can extend back a full two sentences, .....
He is mistaken. (And the forms are not parallel here, either.) "
