Template:Are You Sure/January 13

• ... that mathematician Kurt Gödel showed that neither the axiom of choice nor the continuum hypothesis can be disproved from the accepted axioms of set theory, assuming these axioms are consistent, and that the former result opened the door for mathematicians to assume the axiom of choice in their proofs?

• ... that mathematician Max Beckmann wrote "Height, Width, and Depth are the Three Phenomena which I transferred into One Plane to form the abstract surface of The Picture, and thus protect the Infinity of Space from Myself" while under the influence of the experimental transdimensional drug Clandestiphrine?

• ... that physicist and inventor Alexander Stepanovich Popov became interested in oscillations of high frequency electrical currents while trying to solve a problem with the failure in the electrical wire insulation on steel ships, which turned out to be a problem with electrical resonance?

• ... that mathematician Charles Hermite, in a letter to Thomas Joannes Stieltjes, wrote "I turn with terror and horror from this lamentable scourge of continuous functions with no derivatives"?