Of all the things Alexa Plus can do, I never expected it to make me cry. Since my son left for college, the Echo Show in my office has been making then-and-now photo montages: the toddler with his first tennis racket next to the captain of his varsity team; me hugging him as a tween beside me hugging him as a young man. I’ve teared up more than once. But then comes the ad, a full-screen photo of a hideous brown leather recliner. I go from nostalgic joy to irritation in an instant.