There are questions that simply begs for experience-based, sometimes even opinionated, answers. Zsolt's question that jmort253 mentions is a good example.

By the way: I did an experiment and added a couple of referrals to my answer. Is it better now? And, before you rush to confirm, it is just reference to my earlier writings on the subject, which is still experience-based and not theory-based.

Of course I haven't referred to a specific body of knowledge regarding one of common methods applied in project management, but I guess we don't want to narrow the site down so much.

Having said that, I believe that adding references would improve many answers, so why not have it as a guideline and not a strict policy?

I know that some people would just ignore guideline but we can still use redirect people to it wherever applicable and this way coaching users to get good-quality answers.

There are questions that simply begs for experience-based, sometimes even opinionated, answers. Zsolt's question that jmort253 mentions is a good example.

By the way: I did an experiment and added a couple of referrals to my answer. Is it better now? And, before you rush to confirm, it is just reference to my earlier writings on the subject, which is still experience-based and not theory-based.

Of course I haven't referred to a specific body of knowledge regarding one of common methods applied in project management, but I guess we don't want to narrow the site down so much.

Having said that, I believe that adding references would improve many answers, so why not have it as a guideline and not a strict policy?

I know that some people would just ignore guideline but we can still use redirect people to it wherever applicable and this way coaching users to get good-quality answers.