Tripping is an abomination. Used to be an instant send off and multiple weeks out. Now it's classed as Dangerous Contact, dealt with first by the on field officials in accordance with their first impression (at least a sin bin), handed to the Match Review Committee for a formal grading, and then passed through to the Judiciary for a ruling. Each level of the process involves fresh eyes.
Here are the key elements of each grading:
There are currently eight different type of offences that can be charged under the NRL Judiciary Code. Each offence has particular elements and indicators which are detailed as part of the NRL Judiciary Code and what actually constitutes an offence.
www.nrl.com
Phil Gould was one of many who complained about the downgrading of tripping years ago:
Why is tripping no longer considered a dangerous offence?
www.smh.com.au