Hacker News on 18 January 2021

• I wasted $40k on a fantastic startup idea
• Software effort estimation is mostly fake research
• HR is not your friend, and other things I think you should know
• GPT-Neo – Building a GPT-3-sized model, open source and free
• Context switching costs more than we give it credit for
• We are sending more foster kids to prison than to college
• Show HN: Compare prices that US hospitals charge patients, insurance companies
• That XOR Trick (2020)
• Parler’s de-platforming shows the exceptional power of cloud providers
• Patient Regains Sight Following Artificial Cornea Implantation