On Being A Fish Science
How we classify animals. “Consider birds. Inevitably, one thinks of flight. Most birds can fly. Were someone to suggest that, since penguins do not fly, they are not birds, you would know something was wrong. Everyone knows penguins are flightless birds. What, then, is the logical basis of what everybody apparently knows? Modern birds all have feathers. Would that imply that if a species of penguins were to lose their feathers, they would cease to be birds? Would they remain penguins?” (2,590 words)
