Zebra0.com

The next to function is just one useful function that you might create. What are some others?

When you kick a ball, you are not right next to it. How close to a ball should you be so that when you kick it looks like you are kicking the ball?
If you pick up something, how close do you need to be? What is the calculation?
How close together should two people be to shake hands?
To talk to each other?

Think about other calculations you might need.