Hey MD,
Explain to your son that he was duped much like the scientists were about the curveball being an illusion for a half century. In 1959, a scientist by the name of Dr. Lyman Briggs actually proved that a curveball curves. Dr. Briggs applied proven physics laws, such as the Magnus effect to bolster his theory. If you will recall from high school physics, the Magnus effect is the effect of trajectory on a spinning object. We could go further on this expedition by diving into the Reynolds number ( ratio of inertia force and viscus force on a body in fluid) and Navier-Stokes Equations. I cannot replicate the proper keystrokes to furnish the softball minions with the actuall equations. You can however, if so inclined, google the equations and you can work them out while waiting in line at the batting cages!
Good Luck,
Cliff Claven
p.s. It's a little-known fact that the smartest animal is the pig. Scientists say if pigs had thumbs and a language, they could be trained to do simple manual labor. They give you 20 to 30 years of loyal service, and at their retirement dinner, you can eat them.
