Have you ever killed anyone?
The question was rhetoric and the answer obvious: of course not! But... I happened to be in Lisbon today dealing with some business. I needed lunch and entered a snack bar. Before seating down, I went to the bathroom to wash my hands. When I turned on the faucet, I caused a water collection station — far away, I'm not sure where, in the Lisbon water network — to sip in the small quantity of water I used. I sat down and ordered a pork steak. I did not kill that pig. It was already dead long before I decided I was going to have lunch there. But I killed the next pig. The steak I ate is missing in the fridge and before long the snack bar manager will call the butcher to ask for more. The butcher will call the slaughterhouse and dictate the death sentence of the next beasts. That was the consequence of my economic decision.