Hacker News on 15 October 2018

• Paul Allen has died
• How I’ve Attracted the First 500 Paid Users for My SaaS
• Ask HN: What are some of the best technical talks you've heard?
• Twilio to Acquire Sendgrid
• M.I.T. Plans College for Artificial Intelligence, Backed by $1B
• Survey of YC female founders on sexual harassment, coercion by angels and VCs
• A True Story
• Air pollution linked to “huge” reduction in intelligence
• Lessons learned from creating a real-time collaborative rich-text editor
• Show HN: Polar – an offline web browser with annotations and tagging