I just found out Dr. Posner passed away. My condolences to his family. I had the privilege to be one of his postdocs and he changed the future of my life forever. After being interviewed 9 times, I could not find a job. He called me to his office and showed me his impeccable letter of recommendation. Then, he said, someone in your past is not giving you a good reference. I realized that that person was probably my previous advisor. I removed his name from my CV, and I got a job. Thank you, Dr. Posner. You were a first-class scientist and a true gentleman. I enjoyed my time at Hopkins.