Individuals and interactions over processes and tools
Sometimes, I admit, a process has been introduced for a reason and when the reason is gone, the process stays and everybody follows it blindly by habit. More often than not, a process has been introduced to fullfill a need that human interactions can not address. Human interactions do not leave a trace when one of those humans involved is sick, on vacation, leaves the company or is fired. Tools also address flaws human interactions can't.
It's all a matter of common sense. I wish people would stop complaining about a small overhead (document a story properly, update specs or designs, ...) which has been introduced for the whole project to be successful.
