Once upon a time, we had 'gendarmes' with white sticks and a whistle for 'traffic control' on all major town cross-sections. Now we have traffic lights (not always better, in case anybody wants to make that point).
We have autopilots, we have automatic landing, we have TCAS. Isn't it about time, that airport ground movement control made it out of the stone age as well?
Or do we need another Tenerife to wake up everybody?