The sky is blue until it isn't. This is not a constant as the process which provides us the illusion of a blue sky can be affected and the colour of it can be changed. Granted this is an extreme example as it would require us to significantly alter the composition of the atmosphere, but it is well within the realm of reality.

We wouldn't change our tradition until such a change occurs, but it is folly not to change it when it does. That is the point I am making. Strict adherence to written tradition would say "the ancient texts say our sky is blue and we will continue to act in accordance to that recorded truth" whereas any imbecile could look up and point to the new colour of the sky.

Our traditions can be very long-lived depending on which concept we anchor them to, but no anchor is eternal.

Truth itself is relative and circumstantial in many cases as I reject the concept of objective truth. The universe has shown itself too paradoxical for such a thing to be possible.

Symbolic tradition is largely useless as the purpose of tradition is to serve a purpose.