There is a simple investing rule. One will not invest in any idea which he/she cannot illustrate with a crayon. I think that this is indeed simple and straightforward. It will be crazier if one invests in something one does not understand. This is akin to marrying someone one does not know or taking a job blindly. It is fortunate that some of the best investments can be easily illustrated with a crayon. Dividend growth investing strategy makes these investments more obvious. This is a real-money early retirement portfolio. The generated passive dividend income will render one financial independent.