Template:Are You Sure/April 27

"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 former White House counsel and Presidential aide John D. Ehrlichman (b. 1925) was released from an Arizona prison on this day in 1978 after serving eighteen months for Watergate-related crimes?

• ... that painter and inventor Samuel Morse (1791–1872) met Louis Daguerre in 1839 while visiting Paris, and that Morse become interested in the daguerreotype (the first practical means of photography), writing a letter to the New York Observer describing the invention; and that Mathew Brady, one of the earliest photographers in American history, famous for his depictions of the Civil War, initially studied under Morse and later took photographs of him?

• ... 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 a straightedge (which is laid across the scales); and that (1) knowing the values of n-1 variables, the value of the unknown variable can be found, and (2) 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?

• ... that physicist and space activist Gerard Kitchen O'Neill graduated in from high school in 1944, then enlisted in the United States Navy on his 17th birthday, andt that the Navy trained him as a radar technician, sparking his interest in science?

• ... 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, and that Kendrew's initial source of raw material for myoglobin was horse heart, but the myoglobin crystals thus obtained were too small for X-ray analysis so Kendrew then used whale meat, having reasoned that oxygen-conserving tissue of diving mammals could offer a better prospect?

• ... that the Fugu squash is a genetically engineered hybrid of the fugu fish and any of various types of squash, and that it was created as a vegan delicacy for high-end sushi restaurants?

• ... that author, mathematician, scientist, political activist, and educator Irving Adler (1913–2012) turned his attention, in the late 1970s, to the question of phyllotaxis, specifically to the arrangement of plant spirals according to the Fibonacci sequence, and that his papers in the Journal of Theoretical Biology simulated a revival of interest in the subject?