When a Chatbot Becomes Your Best Friend

I'm about to chat with a dead person. Just last week I saw a particularly disturbing episode of "Black Mirror" in which a devastated widow uploads all of the chats, texts and emails left behind by her husband to a cloud so that she can enjoy his virtual company 24/7. I didn't think my life would catch up with science fiction so soon. I am in bed in my Midtown Manhattan apartment, ambulance sirens blaring on Third Avenue, an iPhone screen glaring in my hand. I pull up the App Store and find Luka, a chat bot program developed and designed by Eugenia Kuyda, whom I used to work with some time ago in Moscow.