It’s hard to describe it in words, so lets use pictures.
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Imagine a circle that contains all of human knowledge:
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By the time you finish elementary school, you know a little:
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By the time you finish high school, you know a bit more:
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With a bachelor’s degree, you gain a specialty:
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A master’s degree deepens that specialty:
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Reading research papers takes you to the edge of human knowledge:
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Once you’re at the boundary, you focus:
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You push at the boundary for a few years:
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Until one day, the boundary gives way:
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And, that dent you’ve made is called a Ph.D.:
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Of course, the world looks different to you now:
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So, don’t forget the bigger picture:
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