Games and fitness blend in this excellent Fitbit for kids, and it makes calls, too. But Google needs to fine-tune its restrictions. I started with CNET reviewing laptops in 2009. Now I explore ...

I’m sitting at my kitchen counter, talking to a bespectacled blue owl named Claire. She stares at me unblinkingly from the computer screen. “Yes,” I reply, somewhat uncertainly. I ramble on for a few ...