The purpose of a system is what it does.

If a system crushes orphans, its purpose is to crash orphans. The designers and participants may say otherwise, but they are ignoring the crushed orphans.

If I make a system to move people around, but this also sometimes leads to the death of people, that does not mean that the purpose is to kill people. It is still moving people around. And instead of ignoring this issue, we make the system better at avoiding accidents and increase safety aspects.

Tge system moves people around at the cost of some dying. That may not be your intention, but it’s what the system does.

Not shutting down the system as soon as you realize it operates on blood means you’re ok with the amount of blood it’s consuming.

No, not at the cost of some dying. That just randomly happens. The same way anything happens while doing anything. Babies are born in airplanes. That does not mean that they are delivery rooms.

Maybe you’ll understand it clearer like this: There are no side effects, their are only effects.

Whatever something does is whatever it does, we have intentions with things but our intentions don’t determine reality. If a system has effects we do not like our only recourse is to change the system, we cannot convince it to be other than what it is.

So then everythings purpose is to do everything. No matter how seldom sometime happens in connection with something, that is it’s purpose. What a useful definition.

you understand that there’s a difference between causality and coincidence right?

Chairs cause weakening of core muscles which can lead to injury, chairs are frequently found in buildings that catch fire however they are unrelated to the fires.

The whole point of the previous examples was to verify this is the logic. Why are your examples now specially not affected? Why is the purpose of the chair not to weak for muscles?