Violation ...
 

Out of bounds is a violation, and an exception to the new rule.

And an out of bounds violation has and is always easy for one to determine a throw in spot

As were (past) all the things that we now use the new (four spot) rule for.

Simpler ...
 

Now ChuckS's idea would be simpler!

Just Three Simple Questions ...
 

... and a few "if/then" statements (just like in Mr. Fiore's ninth grade geometry class).

A. Anytime a team causes the ball to go out of bounds in either the frontcourt or the backcourt, the throw-in occurs from the spot where the ball went out of bounds.
B. When a violation by either team, a foul before the bonus by either team, or dead ball (i.e., an inadvertent whistle or a held ball) occurs that will result in a throw-in, officials must ask themselves three questions:
Where did the violation/foul occur?
Is the throw-in team in its frontcourt or backcourt?
Where was the ball when the interruption occurred?
1. If the throw-in is to be in the team's frontcourt, it shall be at either the nearest 28- foot mark along each sideline or the nearest spot 3 feet outside the lane line and the end line. (Diagram 5)
2. If the throw-in is to be in the team's backcourt, the throw-in shall be at the designated spot nearest to where the foul, violation, or other stoppage in play occurred.

Good Times ...
 

Anybody remember "if and only if"?

I'm pretty sure that Mark T. DeNucci, Sr. does.