So you say you have this technology that creates words that people never actually said.
But it sounds just like their voice.
Clearly this is how Skynet begins!
Sarah: "No, I can't tell you where I am mom. I was told not to say."
Mom: "Oh, but honey, I need to know where I can reach you. You tell me to hide out here in the cabin like some kind of fugitive and you won't tell me what's going on? I am worried sick dear."
Sarah: "Ok. Here's the number...."
Mom: "Ok. Go ahead.... Uh-huh. I've got it."
Sarah: "I love you mom."
Mom: "I love you too sweetheart."
And, this is just early days. Real terminators don't need to hear twenty minutes worth of a voice to duplicate it. Do you really think he sat down and spoke to Sarah's mom for twenty minutes?