You've got a long snout that has 200 million scent receptors in it, and you have wet nostrils that attract and trap scent molecules, and your nostrils even have slits so you can take big nosefuls of air.
Along with their eyes being on the side of their head, those slits let goats make out detail and depth perception nearly 360 degrees around their whole body.
The particle goes through one slit, and then the wave interferes with it itself, and that affects the motion of the particle and builds up this interference pattern.
And in the 19th century, they inspired a whole range of so-called philosophical toys, including this one, a spinning disc with several slits cut around it.
The door next to the linen closet, the locked door, had to be the bathroom. I shook it, but it went on being locked. I bent down and saw there was a short, slit-shaped opening in the middle of the knob.