Hacker News on 14 April 2019

• Want to learn a new skill? Take some short breaks
• Learn TLA+ (2018)
• Icons: Avoid temptation and start with user needs
• America's Seed Fund: Up to $1.5M for Zero Equity
• Single-dose propranolol tied to ‘selective erasure’ of anxiety disorders
• What Is a Manifold?
• Terry Gilliam’s Don Quixote film finally hits the big screen after 25 years
• Org-mode parser in Rust
• Which programming language is used for making Windows 10?
• How do startups get their content marketing to work?