that the answer, as well as a challenge, lies in this week's Parsha - my Bar Mitzvah Parsha - Shofetim.
The key passages come from Devarim 17:
This would seem to provide a basis of support - within the tradition - for a view of the law as an evolving mechanism, which allows for adjustments based on the changing needs of our people.
But while the law allows for change, it still mandates adherence and a sense of willing acceptance; again from Devarim 17:
But we no longer live in the age of the Sanhedrin. From where do we derive the guidance that such judgments would have given us in prior days? Pirke Avot, Chapter 1, verse 16 may provide us with an answer:
"...Select a master-teacher for yourself so that you avoid doubtful decisions; ..."
I believe that this provides a profound answer for modern times, highlighting both the flexibility of the law to change, and the limits of that flexibility. The law can evolve to meet the challenges of the day. We retain the autonomy to choose our guide - and therefore our approach - as we seek to live by Torah. However, I believe that by doing so, we incur an obligation to adhere to the teachings of that guide, to maintain a certain consistency in our approach to Judaism.
Although we may all approach Sinai from different directions, ultimately we all must climb the same mountain.