Well I do agree. Predictions do not always go in the same and in the right direction. Neither a prediction backed by nothing sends a clear message. It is not possible to predict the super power in the next century as long as you do not do all the calculations be it political or related to the economy or cultural diversity.

It can just be a hypothesis and that would need strong and logical reasons to prove why and how things would be in future. It could have been said keeping the technological progress in the mind.