Flint
Nothing! Nothing. Sorry. You know how it is with dads. Bit overprotective.
That's quite all right. Nothing wrong with a little curiosity, and, since you're clearly not an evil mastermind, I don't mind answering. It's a binary cardiovascular system. We can manage with just one heart, but it isn't pretty. In fact, I did that just last week. Don't recommend it. I really have no idea how you lot manage.