[tallhappy]

From the actual PNAS article:

...selection for developmental stability, independent of selection for particular phenotypes, is sufficient to evolve insensitivity to mutation.

[RightWhale]

...selection for developmental stability, independent of selection for particular phenotypes, is sufficient to evolve insensitivity to mutation

Is that the main statement? It could be. According to Wolfram we could be looking at the root phenomenon for all these years and not see; although once we see, it will be obvious.