Preserve the core, and let the rest flux. In their wonderful bestseller Built to Last, authors James Collins and Jerry Porras make a convincing argument that long-lived companies are able to thrive 50 years or more by retaining a very small heart of unchanging values, and then stimulating progress in everything else. At times "everything" includes changing the business the company operates in, migrating, say, from mining to insurance. Outside the core of values, nothing should be exempt from flux. Nothing.
Kevin KellyThe daily grinding of evolution, as accelerated by technology, churns out more and more complex organisms, with higher rates of energy use, and with increasing specialization. Minds are the ideal way to express complexity, energy density, increasing specialization, expanding diversity -- all in one system. Mindedness is what evolution produces. Mindedness is what technology wants, too.
Kevin KellyThe most certain thing you can say about the environment tomorrow is that it probably is going to be just like today, for the most part.
Kevin Kelly