The chance of it happening is really low. After all, you aren't going to research about the original material if you didn't like the anime or thought that it was sub par/ Full of cliché/and so on. The only ways it could happen is ifKholdStare88 wrote: I would hope people do some research before ditching the original material.
-You can clearly feel that there is more to the original work than was adapted (like SAO for example), and therefore takes the time to do some research;
-Someone you know has already read the LN or a part of it and tell you about how better it is. Ironically, one way it could happen is exactly what you described about ZnT; heavily condemning the anime in a place where someone who read the LN can read your "review" of the show and answer accordingly. I find somehow amusing that one of the best way to be informed about the original work is to publicly criticize its adaptation... If you never say anything about how bad you thought it was, the chance of never knowing about the original work is quite higher IMO.
Sometimes the very nature of the original work is heavily altered in its adaptation, like focusing on ecchi or moe scenes without caring too much about character development for example. I don't think that people are going to give even a slight chance to the original work (it being a LN or a manga) in those circumstances.
Hmm... I would say that it's what will make the difference between a good and an excellent adaption in the end. Let's see...A good adaptation is simply true to the original work but usually not as good, whereas an excellent one takes advantage of the difference in support in order to equal or even surpass the original work?I was aiming for how anime can be good even if it doesn't follow the original material exactly though.
@Momento10 : wow, those are some pretty posters. I especially like Nagato's and Inori's (even though I don't especially like Inori, I have to admit that her pictures make good material for posters and such)