Hacker News on 19 April 2021

• Microsoft says mandatory password changing is “ancient and obsolete” (2019)
• The “Granny Knot”
• First Flight of the Ingenuity Mars Helicopter [video]
• Unsettling capital letters
• Dissecting the Apple M1 GPU, Part III
• Hire me and pay what you want, just give me interesting work
• Thinkpad X230 with “e-Ink” display at 30fps [video]
• Basic Music Theory in ~200 Lines of Python
• Large-Scale Abuse of Contact Discovery in Mobile Messengers [pdf]
• Facebook gives money to America’s biggest news organizations