<p>I suspect most of us struggle with this quandary most of the time.  When you can provide solid theoretical support for your response, of course that's good.  But even when you cannot, yet you are sharing experience, that can be just as valuable (or even more so), so please don't hesitate to contribute on that account.  (It helps to indicate what kinds and amounts of experience you have.)  I see this as involving some personal risk because it's possible that the experience I share could be based on a mistaken understanding or inferior approach and someone might point that out.  (This happens to me all the time on some other forums, I'm afraid.)  Well, so be it: it's humbling but it's a great learning opportunity!</p>
