The NBA challenge system is up for debate once again. A few days ago, the Boston Celtics played against the Los Angeles Clippers when a debatable call about a Paul George push-off on Daniel Theis came into question.

Jaylen Brown was called for a reach-in, while George appeared to get-by with the push-off on Theis. While Celtics head coach Brad Stevens motioned and was awarded a challenge, the referees declined to call George for a push-off.

To add insult to injury, the Clippers ended up defeating the Celtics 107-104. Stevens has reluctantly accepted the status of the denied challenge but said he will agree to disagree on whether or not the challenge system is effective.

Like Brad Stevens, Miami Heat coach Erik Spoelstra also recently spoke out against the challenge system. Per Spoelstra, he believes that the game is now being slowed down due to coaches asking for challenges.

While human error is a hit and miss naturally, the new system seeks to wipe away reasonable doubt. However, reasonable doubt makes sports what it is. As coaches always instruct the youth: don't let the referee decide the game.

The new system is looking to duplicate perfection, but it will only add more confusion and envy. So far, not many within the association are willing advocates for the challenge system. Fans can only expect that notion to grow as the season moves on.