Template:Are You Sure/April 28
• ... that logician, mathematician, and analytic philosopher Kurt Friedrich Gödel shocked a generation of thinker when he used mathematical logic to prove that mathematical logic is inherently subject to paradox and uncertainty; that Gödel's work shook the foundations of mathematics, establishing fundamental principles of modern thought; and that later in life, Gödel suffered periods of mental instability and illness, with an obsessive fear of being poisoned, eating only food that his wife, Adele, prepared for him; and that after her hospitalization in 1977, when she could no longer prepare her husband's food, he starved to death?
• ... that mathematician Leopold Kronecker (1823–1891) was quoted by Heinrich Martin Weber (1893) as having said, "Die ganzen Zahlen hat der liebe Gott gemacht, alles andere ist Menschenwerk" ("God made the integers, all else is the work of man")?
• ... that geometrical frustration (or simply frustration) is a phenomenon condensed matter physics where atoms tend to stick to non-trivial positions or where, on a regular crystal lattice, conflicting inter-atomic forces (each one favoring rather simple, but different structures) lead to quite complex structures, and that as a consequence of the frustration in the geometry or in the forces, a plenitude of distinct ground states may result at zero temperature, and usual thermal ordering may be suppressed at higher temperatures?
• ... that physicist and engineer Rolf Landauer (1927–1999) made important contributions to the thermodynamics of information processing, including the principle that in any logically irreversible operation that manipulates information, such as erasing a bit of memory, entropy increases and an associated amount of energy is dissipated as heat, a phenomenon now known as Landauer's principle?
• ... that Fantasy Voronoi diagram is more popular than Fantasy American Football?