its the dumbest referral system in world sport if your gonna use it at least used all the proper technology available i understand not using hawk eye from after the real part but come on Snicko and hot spot would have saved that test from being a draw and tbh would have made a better game. The referral system is sh** and will ruin cricket if they dont redesign it.
They can't use the snicko and the hot spot because they do not occur in real time and require computer software analysis, and are thus technically open to manipulation. There's also other variables that can make them inaccurate at times.
Agree with the second part of your comment.