# Four short links: 27 April 2017

Open Source Mail Delivery, Superhuman AI, Probabilistic Graphical Models, and Golden Ages

April 27, 2017
1. PostalA fully featured open source mail delivery platform for incoming & outgoing e-mail, like SendGrid but open source. I enjoyed this comment on Hacker News, where the commenter talks about turning a $1K/mo mail bill into$4/mo by running their own mail infrastructure. (Downside: you would need to get yourself familiar with SMTP, postfix, SPF/DKIM, mx-validation, blacklists, etc. And by “familiar,” I mean “learn it to the core.”)
2. The Myth of a Superhuman AI (Kevin Kelly) — he makes a good argument that buried in this scenario of a takeover of superhuman artificial intelligence are five assumptions that, when examined closely, are not based on any evidence. These claims might be true in the future, but there is no evidence to date to support them.
3. ## Learn faster. Dig deeper. See farther.

Join the O'Reilly online learning platform. Get a free trial today and find answers on the fly, or master something new and useful.