One of the bedrock concepts in Zen is impermanence. All fine until it stops being a concept and become an experiential reality. So much has been written about it and I have read so much about that I had almost fooled myself into believing that I had some intimate knowledge of it. The fact is that it pervades all and the direct experience of it is nothing like the written concept. It is in fact so unusual that for I time I did not recognize what had happened.

Now to clarify it.