If they did have such a problem, presumably they'd be standing like a schoolboy denied access to the loo - straddling the 22, hopping from one foot to the other, with the flag raised and eyes crossed!Brian - we are told (by some people) that you and your colleagues have trouble deciding if a kick crossed the touch line inside or outside the 22.
In reality is it a significant problem?
That also applies to the South African TJ who has to decide if the ball has reached an imaginary extension of the 22m line.On the touchline the TJ is the sole judge of fact.