In APL: lower⌈ upper⌊ numbers See a stream of random numbers flowing from right to left. See the higher ones being pushed down ⌊ to the upper bound, and t

In APL: lower⌈ upper⌊ numbers See a stream of random numbers flowing from right to left. See the higher ones being pushed down ⌊ to the upper bound, and the lower ones being pushed up ⌈ to the lower bound, and the middle ones flowing through both guards unchanged.