I know, I know, they do, in fact, take damage. I just can't figure out how to do it. Point defense is effectively useless against plasma missiles, so everything in range just plain dies. (Well, unless you have about six thousand meson fighters, anyway, but even then you'd lose half of them.) That leaves missiles. But while you can use box launchers to produce a big enough alpha strike to kill them through their completely absurd shields, a single wormhole will spit out a couple dozen ships every year, and you just can't build missiles that fast. How do you not die instantly as soon as invaders appear?