[Professor S]

You remember because to forget to let yourself become vulnerable again. Apathy is the greatest tool we can give terrorists. You don't necessarily like remembering such painful memories, but we understand that it ius necessary to remember them for our own sakes.

Its called learning from history instead of just letting it repeat itself.

Personally I think the video of the attack should be shown every year on this date, just to remind everyone of what happened and what will happen again if we go back to business as usual.

Unfortunately I think we'll have to endure another 9/11 before we get the message again.