My main objection against this kind of predictions is that predictions (at least, the known enough ones) are part of the past that shape the future. Even doing

My main objection against this kind of predictions is that predictions (at least, the known enough ones) are part of the past that shape the future. Even doing a good extrapolation on the current trends, the prediction itself could make things diverge, converge or do something totally different, because the main decision makers will take it into account and that is not part of the trend. Specially with disruptive enough predictions that paints an undesirable future for all or most decision makers. Unless it hits hard in some of the areas that we have cognitive biases and are not fully rational on the consequences.