Slope
The Lyon Metro map (March 2012, 4 stars) on the platform at Croix-Paquet station — reputedly the steepest Metro station in the world, with a 17 percent grade! Although nominally part of Lyon’s Metro system, the “C” Line is really a refurbished rack-and-pinion funicular, with the earliest trains running as far back as 1891.
(Source: BrusselsBen/Flickr)
Grace Hopper is credited with popularizing the term “debugging” for fixing computer glitches (motivated by an actual moth removed from the computer).
NIGHTNIGHT by DEDDY