title: AngularJS and its use of Dollar Variables
body: <p>Does anyone know if the reasoning behind the use of dollar methods and variables in angularJS is to instruct angularJS to avoid checking those values when a digestion is going on? So, if angular comes across <code>$scope.$value</code> and <code>$scope.value</code>, then it will avoid checking the former since it's prefixed with a dollar character in its variable name?</p>