"Calculate but don’t shut up"
"An "F" for America's Government Schools"

"Medical dogma is that people with heart failure need to adhere to a low salt diet."

But a randomized trial reported in the Lancet doesn't show a statistically significant benefit. However, the Twitterati have a few doubts about the generalizability of the study.

Related: this 20-year-old paper, coauthored by noted Cal-Berkeley statistician, David A. Freedman, "Salt and Blood Pressure: Conventional Wisdom Reconsidered". Years ago when I first read it, I found it impressive, but I haven't kept up with any subsequent developments.