"[A systems approach is] an approach to a problem which takes a broad view, which tries to take all aspects into account, which concentrates on interactions between the different parts of the problem... In this sense, the system is opposite of randomness or chaos. Its subject matter has been described as 'organized complexity', which lies between 'organized simplicity' and 'chaotic complexity.'"
January 1, 1970
https://en.wikiquote.org/wiki/Approach