All Horses are the Same Colour/Historical Note

Historical Note on All Horses are the Same Colour
The paradox All Horses are the Same Colour was originally raised by, and appears in his $1954$ work Induction and Analogy in Mathematics.

It arose from the popular (at the time: the $1930$s) colloquialism:
 * That's a horse of a different color!

meaning:
 * That's unexpectedly new and different.