One thing I have noticed about this board since I joined is how competitive, and well, bitchy, it can be. I am disappointed. Telling people they 'shouldn't' try something just because it is perhaps out of their range isn't much fun. Yes, we all want to be better pianists, and the best way to go about that isn't necessarily by just trying to play 'hard' stuff, but what if we want to try and play it for the pure and simple reason that we like it, even if it is too difficult?
You are right in the sense that people really have no right to tell others what to do and what not to do. All is well, however, many beginners are inept in choosing what pieces they may work on and may end up choosing pieces that will not advance them because of the required skill which they do not yet possess. That will result in frustration and a lack of coherent progress, whereas a piece of easier difficulty will prove to be more manageable and ultimately usefull. People of expertise on this forum can direct to such pieces and save the beginner stress. If something is too difficult you won't like it. It will become tedious after some time and one will eventually drop it because of the lack of technique involved.
and if someone has trouble playing just one bar out of a whole piece then that's hardly any reason to suggest that they shouldn't attempt it at all. how ridiculous. and as for people on this board not being 'qualified' to give advice, what is wrong with discussion? i remember my old psychology teacher saying that class discussion is a great way to bounce ideas off people, you just have to be careful about being too hasty to come to conclusions because of the group's limited knowledge. just because a person asks for advice doesn't mean that they are going to take that advice as gospel. otherwise this forum just might as well not exist.
Let me clear this up. I suggested not that someone who is having difficulty with a bar to drop the piece, I claimed that whoever isn't capable of knowing how to study that one bar should be more wary of the piece. There is nothing wrong with not being able to play a bar of the piece, or even many bars. However, if one was to start a piece, one should know the challenges involved. If however you don't know how to handle that one bar, chances are you haven't had the experience with such technique involved and perhaps should look at pieces dealing with precicely that.
What good is discussion that contains guesses and wrong statements? Whether or not taking advice seriously, it is really up to the reader, who using media such as this should take everything with a grain of salt. However some readers will take everything seriously and will not be able to discern legible negative feed back from the legible and positive kind.