remember the movies SJ, what do Earth's generals do when a nuke fails to shoot down the alien craft? send a dozen more. And then some more. its not always the case, not in the long run, but that how commonly people think... or at least are thought to think
EDIT: More:
An aggressor race would simply be unable to graps (i like the word) the context of electronic counter-measures or cowardly cloaking, while the defender's mind would be unable to think of the atrocity of plague or rad bombs, or high-energy weapons. Thats some reason isnt it?
[ July 03, 2003, 21:39: Message edited by: Taera ]