Urim and Thummim

What is the Urim and Thummim?  Theologians and Intellectuals both have no idea.  Yet it continues to be a major thing when it comes to history.   In Hebrew the term Urim means ‘light’ and Thummim means ‘perfection’.  To most this means nothing, but to me it makes a lot of sense.  Here is yet another central and very important item in religion where the meaning has been conveniently lost.  The so called great authorities on Judaic and Christian religions have had no clue what the Urim and Thummim really were.  The Urim and Thummim is still around.  Hiding in plain sight.