This certainty is more accurate than #2 mentioning change, or #3 mentioning movement, change and metamorphosis. There is a difference between these concepts and #18 that I like to clarify.

This certainty #18 calls it rightfully the "Law of Uncertainty". This does not necessarily refer to Heisenberg's Uncertainty Principle. There is a vaster Law of Uncertainty. It does not mean that everything is uncertain, but that there is a  flip side to Uncertainty, namely Opportunity. So, if there is a Law of Uncertainty, then there is a Law of Opportunity, which states that it is certain (#19 ?) that Opportunities will occur for anything determined by a will towards the future (see #12). This Law of Uncertainty is therefore the only Law that can be used in our advantage by using the will, despite the fact that humanity seems to prefer certainty (as the title of this page suggests).

Change and Metamorphosis are not really certain, because the perception of these is subjective. The concepts attached to change and metamorphosis are not as absolute as the Law of Uncertainty. Opportunities arise because of the will and one could call the appearance of an opportunity a change, a phase in the metamorphosis. But more elementary, the Law of Uncertainty has provided the opportunity for these to occur.