A decision whether good or bad can have a ripple effect on other around you. For example, if you tell your friend you will help them study for a big test and you skip out on them they may fail.
The biggest difference between dietitians and nutritionists lies in the legal restrictions that each title carries. Only nutritionists that become registered with Commission on Dietetic Registration (CDR) may legally declare themselves as dietitians or more precisely, registered dietitians (RDs).