Wrong. They are better. Much, much better. Just not good enough to forecast 20, or 10, or even 5 years into the future with high probability in many situations.
You are obsessed with the notion that things are predictible
This is completely off the wall, not even remotely related to anything I've posted, and said only because you don't like Szilard's views and can't find any other way to criticize them.
Keep in mind that your criticism's apply equally to the decisions which were actually made, and to those who made them. In fact, we are all called upon to make these kinds of decisions all the time - in our daily as well as national lives; Shall I invest for the long term? Should I take on a big mortgage? Shall I buy health insurance? Should I save for the kids' education? etc., etc., etc.