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I find that a proportional response to violence is often the best course of action. I alway told my children to walk away if possible but they should not stand for being abused by another. It's always going to be a judgement call, and things can turn out badly, but unfortunately the world is not a fair place and it is important that we look out for our own best interests.

I gave iNow a tick of approval. But I do have a situation to relate that I believe to be relevant. When my young bloke was about 3 or 4 years old, we had just moved into the house we now still own and live in. Three houses down was another family who had been there for a few years who had another little boy about the same age, who had two older brothers around 13 or 14 years old. My Son and Andrew [the other little bloke] generally got on well together and played with each other as kids do. Except for the occasions his two older brothers would egg him on to hit my young bloke. This happened four or five times, and my Son would come inside crying. My wife would tell him to just walk away and turn the other cheek in true christian like fashion, while after the first couple of times, it greatly annoyed me. On one of those occasions I grabbed my Son after he had come inside crying and asked what had happened. I had though actually observed it. With his Mother away I told my Son that the next time Andrew hit him, to hit him back as hard as he could! Sure enough around a couple of hours latter, my boy was out playing again, with Andrew, and I noticed the two older brothers in Andrew's ear. Andrew then walked up to my boy and hit him. My Son took an almighty swing and hit Andrew back, putting him on his arse! As his two older brothers started to approach I walked outside and made my presence known and the two older brothers turned tail with the young Andrew who was in tears and went inside to their parents. The ending of this tale of bullying as I saw it, is that now more then 35 years later, my Son and Andrew are still the best of mates [my boy was best man at his wedding] and his parents were great friends of ours and still are. Was this a form of justice? revenge? punishment? an eye for an eye? Or just an example of how sometimes standing up for one's self, can have a pleasing ending.

Every number (except 0) has two square roots. Using the convention (ignore negative root) leads to these kinds of problems. l

Yes, and there’s a way to calculate the effects (which is not just flinging crap at the wall to see if anything sticks) It’s also electromagnetic, not gravitational, so you wouldn’t have the right boundary condition to make a Casimir-type interaction. Inefficiency is one thing, but conservation of properties is quite another; they involve symmetries and you have to show the symmetry being broken

Do you mean "some kind of justice"? Perfect justice? Come on.

Depends on how justice is being defined, but one things for sure: Such an approach is a self-reinforcing downward spiral. This type of path leads to mutually assured destruction. At some point, someone must be mature and wise enough to choose to end the cycle, to say enough is enough, not retaliate, and walk away for not only the greater good, but also for their own mental well-being.

You cannot have a CPU "just connected to the power", and not connected to anything else. It is the most basic rule of logic circuitry that all connections (inputs, outputs, control terminals) must be conncted to something. If you do not do so then the conditions at the terminals will be indeterminate (not much use in a logic circuit) and may lead to damaging electrical runaway conditons. In fact a CPU has several power supplies, and the power supply itself which provides these is a sophisticated system that brings the power up gradually in the correct order, and after the already mentioned clock signal and other connections are available. Programs are not loaded into the CPU. They are loaded into a memory array. The CPU has what is known as in instruction set. This is basically a map of the outputs generated by possible combinations of inputs. Not all possibilities are used. When all the power and connections are available the CPU is designed to enter a standard state and load whatever is found/presented at the 'input' terminals by the external circuitry.