S.A.M - Simulated Adaptive Matrix (Official Thread)

But from what I've seen in Early Access, he's less emotive than EDI or Legion but he's also not designed to be an emotive character. He was designed as a symbiont to Ryder, and to that end, he has an almost child-like quality to him. It's like I've got one little brother in a coma, and another in my head. Our family is pretty weird

I've mentioned this before in 1 or 2 different topics, but I'll repeat it here too. I think SAM is not just and AI and I think Alec found a way to transfer his wife's consciousness into it. Why? Because it's been hinted by:
1) Alec memory - he was desperate to make SAM legal and he told his wife "not on my watch" when she told him she's going to die.
2) SAM told Sara/Scott this memory could've been a begining. Of what? We don't know. But it was important if Alec wanted Sara/Scott to see it.
3) In one of his computer logs Alec said SAM is even more important now that his wife is dying

What I also find interesting is the fact that SAM is voiced by a woman, no idea why it's called "he" instead of "she"