why does a knuckle ball not spin.

Question: why does a knuckle ball not spin.
- Keywords:
  ball,
  knuckle,
  spin
Asked by sup dudes to Zoe, Lindsay, Kenzi, Jeff, Avani on 15 May 2015.
- Jeff Shi answered on 15 May 2015:
  
  A knuckleball actually spins a tiny bit, but a LOT less than most other pitches. It doesn’t spin because of the seams (the stitches) on the ball and how much drag they produce when thrown properly, which also causes it to move in ways that are hard to predict.
- Zoe GetmanPickering answered on 18 May 2015:
  
  I dropped out of high school physics after a month. I have noooooo idea.
- K. Lindsay Hunter answered on 19 May 2015:
  
  Yeah, I looked this one up. 🙂
  
  Like Jeff said, it *does* spin a little, and the reason is in the stitches. But as for why it seems to take such a crazy course to the plate? This was my favorite answer–it seems that it’s actually an optical illusion!
  http://www.salon.com/2013/05/14/is_the_knuckleball_an_optical_illusion_partner/

Question: why does a knuckle ball not spin.