Because otherwise they would be unable to track movement and move the cursor in the computer screen.
In case he got a hole-in-one!
Incase he gets a hole in one
They need to learn scientific notation to keep track of their n-count.
I replied "It's hard to keep track."
A nun working in a condom factory thinking she's making sleeping bags for mice.
I said to watch him like a hawk! ME: soaring 20m above w/ a beakful of mice I AM
His vision was based on movements.
Because your foot would go right through the computer screen!