A few months ago, Tommy bought a fancy new scale to track his weight. It takes a measurement, then automatically uploads it to an internet site where you can track the trend over time. We were very impressed because it could discriminate between us based on our weight, and put the measurements in the correct graphs online. This was all fun and games until the ninth month of pregnancy. Now, the scale has to ask me whether I’m Tommy or Tracy, because our weights are so similar. I am no longer friends with the scale.