Wow, never have I apparently said so much when saying so little. I'll try again.

If event B occurs after event A, this does not necessarily imply that event A caused event B. To assert that coincidence does imply cause is to fall prey to the post hoc fallacy.

Now, on another subject - this morning, after I brushed by teeth, I looked out the window, and my dog was chasing a duck down the creek. Amazing what can be accomplished with a toothbrush!