In the December 21, 2013, edition of The Economist we learn that the Dutch Party for the Animals (PVdD) succeeded in getting the national parliament to ban round goldfish bowls because they are too stressful. This evokes a bowl of questions. How do they know it is stressful? How do we know that they know? What shape is preferred? Should ponds where goldfish live not be round? What depth? But what about predators? If we favor, say, goldfish over their predators are we playing God, god, or goddess?
I don't know.