KSQD: 3-29-2023: Life expectancy in the U.S. is lower for the second year in a row; Safe limits for fluorinated hydrocarbons are lowered by the EPA; Lancet preprint article about effectiveness of a COVID-19 vaccine developed in Cuba has problems; Discussion of disc fusion surgery for neck pain and why pain appears in other areas of the body; Pain and numbness down left arm after playing the piano; How well can an AI neural network recognize skin cancer from skin images? The Heart Math device for stress reduction technique is called Inner Balance; Suggested dose of tea tree oil, which can combat mold; Caller has problems with trigger finger in multiple fingers