Some of the most important issues that we face as individuals cannot be addressed by the scientific method. Thus, in order to use science intelligently we must be careful to distinguish the issues that science can and cannot address. In other words, we must only attempt to falsify falsifiable hypotheses. Often, when a hypothesis has resisted falsification many times, and has been provisionally accepted as true, we begin to wonder WHY it and related hypotheses seem to be true. Scientists attempt to answer these questions by postulating general rules with universal explanatory power, called theories.
Theories generally address a large range of phenomina using a small number of powerful rules.
This is just plain wrong. There isn't a single uniform proceedure that all scientists follow. The process of describing the material universe, including its components, history, and the processes acting within it, by means of observation and hypothesis falsification.