It’s a busy day at the aquarium, as you wander from tank to tank watching the creatures swim back and forth. Huge groups of school children on field trips in matching t-shirts pass young frazzled parents dragging screaming children from tank to tank, trying to get their attention. You scoot past a young woman with a gaggle of toddlers, frantically pointing at the penguins behind the glass as they stare blankly back at the...