we do not have real referee's now ...in my latter working years I was in transport and logistics up to age 72! you needed to be a map reader and route finder till gps etc became the norm … now anyone can do the job I did! imagine 4 deliveries in London! spread out! and the map book was about 120 pages + .. didn't say no entry! [ latterly in zone or out ] … and when you got to edge of page it was not just turn the leaf it was x pages more or less and continued top middle or bottom! … ref's now keep up with play "almost, as no need to as Var is there " … slightest doubt ...var.. used to be "thinking on their feet, is that ok, was that ok, etc etc" …. just puppets now.