I cannot recommend this free Issac Asimov story enough. I guess the “singularity” is before his time but he anticipates so much of what is associated it like AI, immortality and transhumanism in many of his books. What makes the singularity surprising is that it presents us with a counter intuitive rate of change. But even this I suppose we mostly care about because we anticipate amazing things in our lifetime. If AI were 500 or 1000 years away I doubt people would care or debate that issue. Anyway, this story is short but fascinating and I can’t do it justice.