Our main goal early in the project was to reduce glucose variation with an emphasis on reducing the overcontrol that was occurring. This was not a simple task because with diabetes there is no choice but to eat ( usually sugar ) when blood glucose drops and there is very little choice but to take extra insulin when blood glucose gets high (>250 mg/dl ). There was no doubt that we were dealing with a truly chaotic process.This indicated that we needed to try to find a control condition for Carolyn's diabetes that would make her process more robust (insensitive to sources of variation )