The triangle for success
I HAVE OFTEN used the triangle for success as shown in Figure 1-1 to explain the components needed for a successful project. You need all three facetsa notation, a process, and a tool. You can learn a notation, but if you don't know how to use it (process), you will probably fail. You may have a great process, but if you can't communicate the process (notation), you will probably fail. And lastly, if you cannot document the artifacts of your work (tool), you will probably fail.
Figure 1-1 Triangle for Success