Halacha is a set of laws based on decisions promulgated through a tradition of interpretation. Halachically Observant Jews refer to rabbis that understand the process. As new situations come up, each case is decided on its merits, and . . . the process continues. Reform and Conservative Jews, as I already said once, dispute the validity of the Revalation as the "litmus test" for Halachic decisions, and take it "Historically". Therin lies the dispute. As long as we can live together without throwing intellectual garbage at each other, I think we will very well thank you very much.
One student killed, three wounded at Arizona campus during fight (a)
from the article: In defense of Jewish pluralism