[CobrastanJorji]

Ultimately, that's most every field aimed at helping people, though. In order to make things better, you need to define which direction "better" is. This comes with a mess of thorny problems. Medicine gets it easiest, but even the seemingly objective goal of "healthy" comes with terribly hard ethical questions.

Psychology has it much worse. What the heck is "better?" Is being a jerk a psychological disorder? Psychologists have a lot of trouble defining diagnoses, and then they have trouble deciding if any one person matches it.

This happens with government, education, public works projects, you nave it. If your goal is to improve things, it comes with an opinion on what an improvement is.