Hacker News on 9 June 2018

• Why does a spray bottle work?
• JVM Internals (2013)
• Asus replaced the touchpad on its new ZenBook Pro with a 5.5-inch touchscreen
• The Hardest Program I've Ever Written (2015)
• Researchers suggest that R.E.M. sleep serves to warm the brain
• Show HN: Interactive guitar scales diagrams
• Reddit DMs will not reach their destination if they contain certain text
• Why emergency braking systems sometimes hit parked cars and lane dividers
• OpenBSD, C, httpd and SQLite – Web App stack
• Lost John Coltrane Recording from 1963 Will Be Released