Because he's not 100% certain.

he can't be.... because he's right.
Stevo has no idea what momentum is...

What decision should he give when he hasn't seen any reason to disallow the try but isn't 100% a try was scored?

It could bounce forward towards the opposition line.
It could be blown forward towards the opposition line by the wind.

These (along with momentum) are explicitly mentioned in the laws if the game as situations in which the ball can move towards the opposition goal line and not be a forward pass.

At what point did I mention momentum? The fact the ball has mass is pretty irrelevant.

My question stands - "because he's not 100% certain" is not a physical reason. A physical reason in this case being an act or suspicion of an act.

...ie new question the referee could well ask the video ref "is there is act which took place, or do you suspect of any act that took place that could have stopped the the try being scored".

Depends on the circumstance. He could allow the tackle count to continue, or award the defending team a 20-metre restart.



Doubt implies that one is not sure about what occured. I think the burden of proof should be on the attacking team to score, and not whether they 'might' have scored. Of course, when there are no physical reasons to disallow a try, then 'doubt' becomes less of a factor in lieu of certainty? It's all semantics, i suppose, but i don't think 'doubt' should be apart of a referee's vocabulary.

He should just choose a random option? He hasn't seen any reason to give a 20-metre restart, or to deny the try and allow the tackle count to continue.

you didn't explicity say momentum however your explanation of a forward pass was on the momentum rules. as players are traveling. when i stated the ball could be passed in any manner and directions as it is not in a direction closer to the opposing goal line you said i was completely wrong. and went on to give the senario of a player traveling at 15mph. however in my statement i don't recall actually mentioning the players moving so i stand by my definition

Not all. It depends on the circumstance in regards to why he's not certain it's a try. That could be dependent on numerous factors such as being held-up, knock-on, or short of the line, etc...

Conversely, I don't think a try should be awarded because it will lead to a dead-end in regards to how the game should be restarted.