It is clear you have never studied Jewish law. Oral Torah basically gives instructions for HOW to obey Torah.
- In some cases this simply means filling in the details of what is not explained in Torah. For example, Torah says not to work on the Shabbat, but doesn't explain what work is. Is reading work or not? How about writing? What about carrying things? What about carrying heavy objects? What about carrying a baby? Oral Torah looked at the fact that in Torah work on the Tabernacle stopped on Shabbat, and so it was ruled that any labor used for the construction of the Tabernacle was forbidden on Shabbat, forming 39 categories.
- In other cases, the Oral Torah follows the general rule of thumb to "build a fence around the Torah," meaning to make sure that we don't accidentally violate a law. Thus, while strictly speaking Shabbat doesn't start until Friday sundown, in Jewish law it is started 18 minutes before so that if something "goes wrong" one doesn't accidentally get stuck violating Shabbat.
I have examined Jewish law and know how Jews look at it. But I think that the Jews badly mishandled their law. I know how they think the Torah is to be used, and I think they are wrong. In this respect, I agree with the Karaites.
But it's not terribly interesting to me because I'm a Gentile who never was under Jewish law. The place where what the Jews did and do parallels something that DOES interest me is in the way different Christians handle the Scriptures and the other traditions.
What particularly interests me is neither scripture nor tradition nor church as such, but miracles, as miracles stand apart as physical manifestations of the power of God that can be examined (and corroborated) by the physics (as in "Yes, that is perplexing, because that breaks the laws of physics..."). A miracle is a thing that is manifest and not deniable, like America to a flat earther. Some of the most interesting miracles answer theological questions decisively. What is interesting to me is that NEITHER the scripturalists nor the traditionalists will generally accept the evidence of miracle (or if they do, only grudgingly) because they are so inveterately prejudiced in favor of their philosophy of looking at things.
For my part, I am much more persuaded by miracle than by either writings or traditions.
That said, in the battle between writings and traditions, I have often observed that there is a fault line in Christianity that divides denomination from denomination, and it all revolves on the degree of authority that one gives to certain things said by the Apostle Paul in some of his letters.
Here, there are maximalist traditions that essentially blot out everything else by the words of Paul (because they like those words...and therefore they believe those words are the truth), and the minimalist traditions that diminish Paul in favor of something else, usually a Church tradition to the contrary.
That's the Christian equivalent of the Karaite spat.
It's not that I don't understand the Jewish law and traditional Jewish concepts of it. I do. It's similar to the tax resisters. It's not that I don't understand their arguments and see what they base it on. It's just that I find their arguments indefensible. Because I don't like to fight with people I just let it go. But in a forum like this things like that come out.