[xapata]

It's important to record that a decision was arbitrary, if it was.

For example, my father was in a meeting (snoring, as was his right as the longest serving member of the organization) when he overheard someone say, "We shouldn't change that, it's probably done that way for an important reason." Luckily, he woke up and interjected, "No, I picked that arbitrarily 30 years ago. Go ahead and change it." It'd have been better if he had written down the rationale, but don't judge. He wrote down plenty over the years.