Tasha’s avatar smiled from the screen, a little too perfect to be true. That was a choice, just like everything else about it: When we’d installed my sister’s new home system, we had instructed it to generate avatars that looked like they had escaped the uncanny valley by the skins of their teeth. It was creepy, but the alternative was even creepier. Tasha didn’t talk. Her avatar did. Having them match each other perfectly would have been . . . wrong. “So I’ll see you next week?” she asked.