I agree, jeremy, which is why I questioned the reference to 'the World Cup' in previous posts. As I said in a previous post I pointed out the World Cup Tournament (regardless of the sport [apart from rugby]) starts long before any Finals draw.
Sorry Hope, but it is absolutely 100% clear to me exactly what the Prof was talking about. There was no need to question anything in that respect.
We are in the situation that South Africa and Argentina - and to an extent Australia - are in a bit of a slump and will certainly improve before the next tournament. If the seedings are based on current standings, we will probably end up with another group of death situation like the one containing Wales, Australia and England in the last tournament. As things stand at the moment, you could have a group containing New Zealand, South Africa and France, which might be fine on current form but all of those teams have the potential to be in the top four in three years time.