At first, you don’t know what will happen if the gear sticking out on the left is rotated downward. … If the person tells you that the result will be the right gear rotating upward, you’ll either take it on faith, or you won’t, depending on how confident they seem and how much you trust them. … after a little thinking, you can know that the person’s claim is wrong.
“Upward” and “downward” are generally ambiguous with gears. But in this context, I’d say that “downward” for the left gear means counterclockwise, and “upward” for the right gear means counterclockwise, and the person is correct.
(Val’s article uses clockwise/counterclockwise instead of upward/downward, and gets it right.)
“Upward” and “downward” are generally ambiguous with gears. But in this context, I’d say that “downward” for the left gear means counterclockwise, and “upward” for the right gear means counterclockwise, and the person is correct.
(Val’s article uses clockwise/counterclockwise instead of upward/downward, and gets it right.)