Every OS has 0-day issues - no such thing an OS without them.
Except for Oberon... (And other similar designs in the spirit of "obviously no deficiencies")
Actually, an effective system would DETER attacks. Instead, Iron Dome seems to perpetuate the conflict. Need to find a way to deter attacks.
You're talking about radar-guided counter-battery fire. Well, Israel could most certainly do that, but prepare for the shit hitting the fan it they ever do that.
This is what an unintercepted impact looks like
Hey, that looks conspicuously like my room! Damned Hamas. I knew there was something wrong when no amount of tidying up could make any marked difference in neatness.
There is no scientifically valid way to rule out life forms which are unlike our own
I'm pretty sure there are ways to constrain the range of possibilities. One obvious thing is that no life forms will most likely be based on xenon or gold because these elements don't really form the same kind of a wide range of interesting compounds that carbon does. The laws of physics (and chemistry) are the same pretty much everywhere, and just because our brains (and computers) are incapable of reaching more significant conclusions on this issue at this very moment doesn't mean that it's going to stay like that forever.