The following material was created by Matt Might. I would like to thank him for generously agreeing to share this material. It was originally posted at this site.
Imagine a circle that contains all of human knowledge.
![Circle of Human Knowledge](images/PhDKnowledge.001.jpg)
By the time you finish elementary school, you know a little:
![Elementary School](images/PhDKnowledge.002.jpg)
By the time you finish high school, you know a bit more:
![High School](images/PhDKnowledge.003.jpg)
With a bachelor's degree, you gain a specialty:
![Bachelor's Degree](images/PhDKnowledge.004.jpg)
A master's degree deepens that specialty:
![Master's Degree](images/PhDKnowledge.005.jpg)
Reading research papers takes you to the edge of human knowledge:
![Reading Research Papers](images/PhDKnowledge.006.jpg)
Once you're at the boundary, you focus:
![Focus](images/PhDKnowledge.007.jpg)
You push at the boundary for a few years:
![Push](images/PhDKnowledge.008.jpg)
Until one day, the boundary gives way:
![GivesWay](images/PhDKnowledge.009.jpg)
And, that dent you've made is called a Ph.D.:
![Dent is called Ph.D.](images/PhDKnowledge.010.jpg)
Of course, the world looks different to you now:
![New world view](images/PhDKnowledge.011.jpg)
So, don't forget the bigger picture:
![Bigger Picture](images/PhDKnowledge.012.jpg)
Moral of the story : Keep Pushing