It would be hard not to recommend this quiet little gem

Rating: 8/10 (17 January 2014)

There are two stars here: Joaquin Phoenix and the script. It's a virtual dead heat between them. Joaquin shines in every scene as if he were born for this role. He's a bit odd, but likable and emotionally intelligent. In fact, he writes letters for others as a living, sometimes fairly intimate letters.
He's just been divorced from Rooney Mara who I didn't recognize. By chance a full-blown artificial intelligence is invented just when he needs someone to talk to, and he's one of the first to try using it as his operating system. It's at this point that the script tends to contend with Phoenix for the limelight by engaging in various explorations of the possibility of having a relationship with a charming but disembodied being.
The journey is pleasant, insightful and convincing, but not earth-shaking. Still, it makes its points with grace and wit and is more than just impressive or memorable.