The latest letter starts by defining autonomous weapons as those which "select and engage targets without human intervention"
At some point in the chain, there was human intervention. The machine cannot simply select/engage without first being programmed by an individual having a brain and a heartbeat.
While it's a bit unnerving knowing that a machine/robot/droid or whatever you choose to call it has been programmed with a thought process, in the end, it is a machine and if given the choice of facing it or another human, I'd choose the bot. Why?
It will act based solely upon the algorithm(s) with which it has been programmed. It is devoid of emotion...it knows not courage, fear, anger or ruthlessness. It has no will to survive; it knows "on" or "off".
It's totally predictable...
Humans ain't.
I think what you're saying is that it would be easier to face a robot in combat because of it's predictability. I would agree to a certain extent. You have to weight that against the precision and data with which it executes its actions. Speed, distance calculations, predictive analysis, etc. all done at a much higher rate of speed and accuracy than humans. All done with ruthless efficiency. Better systems "learn" from their mistakes. It could a long bloody time before anyone discovers the ****** in the armor, flaws or weaknesses in the programing.
But, before it even gets to that point, before the actual conflict, it's the "devoid of emotion" part that many fear. That a device may turn on it's master, running a "flawed" algorithm without the moral compass and experience to stop and ask itself, "Maybe, this is wrong."
Unintended consequences.
By the way, humans are more predictable than you'd like to think they are.
ruth·less
ˈro͞oTHləs/
adjective
adjective:
ruthless
having or showing no pity or compassion for others.
Save her, save the girl!
Save her!
But I, um... it didn't.
It saved me.
The robot's brain is a difference engine.
It's reading vital signs. It must have calculated that...
I was the logical choice.
Calculated that I had 45% chance of survival.
Sarah had only an 11% chance.
She was somebody's baby.
11% is more than enough.
Human being would have known that.
- Det. Spooner - I, Robot