Harry Kane questioned the use of VAR after Tottenham's 1-0 loss to Newcastle United on Sunday.
Kane revealed referee Mike Dean said he did not see an incident when deciding not to award a penalty against Toon captain Jamaal Lascelles.
"It's there to help the referee on the pitch," Kane said. "Mike Dean said that he just didn't know, he couldn't see, so that's where the VAR is there to help him out.
"If he had said 'no penalty' and the VAR was a 50-50, then you can agree. But I don't know what his conversation was with them upstairs, if he said he didn't see it or not.
"I've watched it back and find it hard to understand how it hasn't been given. It's just like if a goalkeeper comes out, uses his arms and trips you up it's a penalty. I kind of tripped over his arm and then his body fell into me.
"Whether it was deliberate or not, from my point of view it's hard to take. But I said last week [after the Manchester City game] that with VAR sometimes you are going to get the rub of the green, sometimes not.
"The offsides are definite because there is a kind of guarantee. The 50-50 ones are always hard. It's never going to take away that speculation because, like this one, it's always a matter of opinion."
