THE SIMPLICITY OF THE COMPLEX SYSTEMS - essay about origin of Life

I expect you've read far beyond introductory chaos theory but "deep simplicity" by John Gribbin is quite an inspiring read. Forgive me for not reading the whole post, but I just want to say, on the subject of whole being greater than sum of parts: Since any system made of more simple systems requires integration/coordination of those smaller systems, this integration in space time and function is of itself not a part: hence more than parts is required. I'm probably missing the point. All the best.