This is kind of a silly article to me. It is obvious that nobody can be 100% rational. It is not even rational to think that one can be rational all the time.

This is kind of a silly article to me. It is obvious that nobody can be 100% rational. It is not even rational to think that one can be rational all the time. I've also been in sales a long time, and it is a given that people make decisions irrationally and then use rationality to justify their irrational decisions. If you are a hyper rational person and are tasked to make a decision on what product or service to buy, but this product or service is a key purchase that a lot of people and business units will depend on, you may TRY to act rationally. In reality, many other irrational fears come into play. What if you make the wrong decision, despite all the rationality in the world, you don't KNOW if the product or service will work in your business, despite testimonials from other customers of the vendors. And, if it IS a colossal failure, are you going to have hour job if you make a bad decision? Then, will you be forced to move? Will you have to pull your children out of a school where they seem to be excelling? Will your wife want to move if you get fired? Will you be demoted? Will you be kept there, but transferred to a do-nothing job? All of these issues and more are not rational, and can effect a decision. Lots of people, back in the day, would just buy IBM, because as the saying went, "Nobody gets fired for buying from IBM." Nobody gets fired, because it is the safe choice. Not the best choice, necessarily, but the safest. Because then all you have to do is say, "Hey, it's IBM boss. Everyone buys from them, they have a stellar reputation. This has to be THEIR fault, not mine." And that is true and exactly how it went. Now it is the same for stuff like buying SAP ERP system. Buy another one at the risk of your career. . And in the Scientific Method itself, it acknowledges irrationality. The double-blind experiments are specifically designed to eliminate bias as much as possible. Bias meaning irrationality, at least in my books. Another way to eliminate irrationality is reproducability. By having reproducability, it is impossible to be irrational in an argument if the results cannot be duplicated by someone else doing the exact same experiments using the exact same procedures. This has happened many times when someone has tried to duplicate an experiment, only to find out the original was wrong, and someone didn't irrationally publish their results without others being able to double-check.