For those interested in another very different analysis of the evidence for and against superintelligence being a worthwhile concern, here's Holden Karnofsky, executive director of GiveWell and the related Open Philanthropy Project:

- Up until 2016, Holden held the opinion that it was not a worthwhile concern. He describes why he changed his mind here: http://www.openphilanthropy.org/blog/three-key-issues-ive-ch...

- And he outlines his current arguments in favor of treating it as a significant concern here: http://www.openphilanthropy.org/blog/potential-risks-advance...

In that lengthy write-up, he addresses both the shorter-term risks from things like misuse of non-superintelligent AI, along with longer-term risks from superintelligent AI.