That’s easy. Your intent was for it to maybe shoot someone, and that is a criminal intent. If you had no such intent, it’s either accidental murder or no guilt

That’s easy. Your intent was for it to maybe shoot someone, and that is a criminal intent. If you had no such intent, it’s either accidental murder or no guilt (e.g. you built a robot that takes a heap of non-classy trash and throws it into a grinder; an intruder was grabbed by it accidentally because they weren’t well-dressed). This discussion mistakes existing policies as some objective base, but it’s the other way round.