Q: My cursor drift off on its own. New windows open up, scroll by, all out of my control.

Tapping away on my Macbook Pro, the cursor will suddenly drift away from me and float about the screen. No amount of tapping or coaxing brings it back to my control. Sometimes the display will suddenly change and I'll be looking at a new window. It's crazy annoying. I have the 2013 macbook pro with retinal display. I'm on El Capital 10.11. 2 I've tried turning the computer off altogether. Sometimes that works, sometimes it doesn't. Anybody else have this problem?