How can we prove that chaos is "just patterns we haven't recognised?

An interesting, if nit odd statement in itself.

How does anyone actually "prove" anything?

Well, much of what we understand today, was once not understood, and may have seen to be chaotic and without pattern.

Take, for example, weather. It likely seemed like chaos to ancient s, with no patterns. As our knowledge and understanding of weather increased, patterns emerged that were not chaotic at all. Scientists themselves now claim to see various patterns in much that science used to, and some still define as chaos.

BTW, one could have some interesting perspective for consideration, regardless of what he/she authored, or whether they play a french horn in their spare time;)