Template:Are You Sure/April 27

[[|thumb|175px|link=|"The Nixon campaign in 1968, and the Nixon White House after that, had two enemies: the antiwar left and black people. You understand what I’m saying? We knew we couldn’t make it illegal to be either against the war or black, but by getting the public to associate the hippies with marijuana and blacks with heroin, and then criminalizing both heavily, we could disrupt those communities. We could arrest their leaders, raid their homes, break up their meetings, and vilify them night after night on the evening news. Did we know we were lying about the drugs? Of course we did."
-John Ehrlichman, White House counsel and presidential aide, quoted in "Legalize it all", Harper's Magazine, April 2016.]]

• ... that biochemist and crystallographer John Kendrew (1917–1997) investigated the structure of heme-containing proteins, and that Kendrew shared the 1962 Nobel Prize for chemistry with Max Perutz for determining the atomic structures of proteins using X-ray crystallography?

• ... that former White House counsel and Presidential aide John D. Ehrlichman was released from an Arizona prison on this day in 1978 after serving eighteen months for Watergate-related crimes?

• ... that a nomogram (from Greek νόμος nomos, "law" and γραμμή grammē, "line"), also called a nomograph, alignment chart, or abaque, is a graphical calculating device, a two-dimensional diagram designed to allow the approximate graphical computation of a mathematical function, consisting of a set of n scales, one for each variable in an equation, and that knowing the values of n-1 variables, the value of the unknown variable can be found, or by fixing the values of some variables, the relationship between the unfixed ones can be studied by laying a straightedge across the known values on the scales and reading the unknown value from where it crosses the scale for that variable?