Hacker News on 15 December 2019

• JetBrains: $270M revenue, 405K paying users, $0 raised
• Google is not a search engine, but an ad engine
• Calm Technology
• Unbearable news
• A Dropbox account gave me stomach ulcers
• Stanford CS 144: Introduction to Computer Networking
• BMW shares AI tools used in production
• Faults in Post Office accounting system led to workers being convicted of theft
• Introduction to Stochastic Processes [pdf]
• The Higher States of Bromine