I grew up in a house under construction. Every day for the first 18 years of my life, I looked at the wiring in the unfinished walls. It was nice to have the wires. They were fat, black and rubber-coated. Because they ran horizontally through the 2x4s, they made a convenient place to hang things - towels in the bathroom, school awards and prizes in the kitchen, crayon drawings in the kids' bedrooms.
If I'd been born a boy, I probably would have been an engineer. I was born a girl, and I'm so glad, because I get to use a toy pink pig and stickers to teach the black-and-white, no-frills subject of electricity.