This Wenger charge for calling into question the integrity of the referees

[Pokster]

But a video ref will mean a second opinion. Also, it's more difficult to justify a blatantly wrong decision if you're able to watch the thing play back in slo-mo.

So I have seen some ex refs say no pen on Wednesday, and others say Pen... so what happens when we get Video ref and the onfield ref says pen, and views it again and still says pen, and the video ref says no pen?