I asked this question (how to reduce human effect) from the business perspective . Business and customers are paying the bill and they need reliable and predictable results. I believe human nature effect on software development (including irrationality) is one of the main factors why it is not possible now.

However, in the larger context I agree with you – business, software development, web, etc. are only serving us, humans, and shouldn’t be considered as the end goal. The end goal is much larger, but it is an another topic :)

I think you’re asking the wrong question. Nobody will gain from increasing rationality in software development. First of all, it’s clearly not possible since humans are and will always be highly irrational.

Secondly, it’s not a valuable goal by itself. What would be gained?

I think you need to rethink your question. This question makes me feel as if you consider software development as a goal by itself. I consider that to be a false assumption.

Software development to me always serves some purpose. If you consider software development as a goal by itself, will this advance the original purpose?

Hence, if you increase rationality in software development, will this serve the original purpose?