As bigdaddy says, the laws of physics are constant. One thing that DOES change is new methods of presenting an illusion. The best illusionists can make you believe that they just made a building disappear, or a softball rise. Your eyes and brain told you so, but physical laws will prove you wrong every time. But then, people also once believed that Earth was flat!
Any way you slice it though, an upward slanted pitch with lots of backspin, that doesn't drop as much as a regular fastball, is VERY effective - regardless of what you call it!
So you have never seen a real one?
The laws of physics are correct. For the cut rise, extremely difficult to get the number of spins per second using ONLY the wrist. Unfortunately, I think that is the only riseball that has ever been put to that test and had those laws of physics applied to it.
Again, this was done by people that only know one way to throw a riseball, a cut riseball.