I have never heard that before.
I have no idea.

. It would seem that I have no good reason to think that purpose can be a product of chaos.
But I am going to say that it can happen anyway just to annoy you.
A thing can appear purposeful and yet have no objective purpose. That is to say that there can be the illusion of purpose if events accidentally coincide in such a manner that we can identify aspects of it as corresponding to our idea of purpose, much in the same way that a mirage corresponds to our idea of an oasis.
But . . . MoM:
That’s not what is indicative of ‘purpose’! What is indicative of ‘purpose’ is when an event happens always or for the most part from the same cause or causes so that we cannot attribute that event to chance. When we watch a pair of birds court, gather sticks, then make a nest, we can be pretty sure that the
purpose of all of that is for ‘the production of a future generation’. When we watch two people making vocalizations that have a commonality to them, while sipping coffee together at Starbucks, we are right to conclude that the
purpose of those sounds is communicative, in some manner - even if we don’t understand their language.
Another approach to proving ‘purpose’ is to show that in any completed series of actions the prior members of the series are for the sake of the later or posterior ones (
Commentary on the Physics, Bk. II, les. 13, 3). If we look back at the example of the mating birds, above, then add to it ‘the laying of eggs, the tending of those eggs, the tending of the fledglings, and the eventual pushing of them out to fly’, we get an even stronger sense of the ‘purpose’ of those actions. ‘Purpose’ is usually a clear manifestation of an action or, of a series of actions.
The ‘mirage’ you mention above speaks more to a certain regularity, determination and order, in nature, rather than to disorder, coincidence, or chance. We know a mirage is a kind of illusion every time we encounter one again - after the first one or two. We recognize it as a kind of rare
violation of the order we perceive usually in nature. Further proof of purpose in nature.
(I know you knew all this; I just wanted to annoy you!

)
God bless,
jd