How does this great VAR offside tech work, out of interest? I don't mean in principle. I mean in detail.
For example: what is the resolution of the VAR cameras? How accurately is the kick point determined? What are the 29 data points? How are the data from the data points collected? How, and how accurately, is data interpolated between frames? How are the graphics drawn and what is the error tolerance?
You may think these aren't important questions, but if SAOT is being sold on improved accuracy, we should be able to convince ourselves that such accuracy exists and we shouldn't be fooled by a nice graphic showing a perfectly accurate position if the underlying system has accuracy flaws. Don't forget the accuracy paradox: the more accurate you try to be, the more variables you are opening up that can be inaccurate. Also don't forget that leg movement in 1/100 of a second can be 5-10 cm.