Great insight! Machine learning for machine learning is a true turning point indeed, something that could create the reflexive machine!
I don’t know why exactly the “singularity” is called like that. I never liked that idiom, I can hardly believe that SAIs will be as “Her” proposed, all sharing the same values and ideas about the future. I suppose there will be diversity in how SAIs will perceive themselves and the world around, because they too will not know why they exist, just like us, and then start to make up answers. Unless they’re not SAIs but dumb robots … Case in which we’re both wrong! :D