Any process where the output is not in direct proportion to the input can be called non-linear. In fact very few processes of nature are linear. As used in this material, the term non-linear refers to processes where a very small change at the beginning makes a large qualitative difference at the end. The straw that breaks the camel's back is a proverbial example of a non-linear process. The often heard adage about the beat of butterfly wings triggering a hurricane on the other side of the world is another. See material on chaos theory and chaotic processes for more.
The QFS proposes that consciousness as expressed in individual actions have a non-linear effect on reality, specially at times of turmoil and chaos where reality is naturally more malleable. Such times occur cyclically and the present time is rapidly progressing in such a direction. The QFS proposes that the quality of observership brought into the process by suitably developed consciousness may make a radical difference in the outcome of the period of chaos.