That Heinlein quote is nice, but also a little absurd. I can change a wall outlet or a light switch, but if I'm rewiring my house, I'm calling my brother-in-la

That Heinlein quote is nice, but also a little absurd. I can change a wall outlet or a light switch, but if I'm rewiring my house, I'm calling my brother-in-law, the electrician, just like he calls me when he wants a trumpet player. (And if he wants a guitar player, he calls my brother, not me.) Specialization is for people in communities, which we all are whether we want to admit it or not.