Based on context clues, in this excerpt, the meaning of "dig" is most likely "working hard towards a goal."
This excerpt compares the new generations to previous or old generations. In this comparison the author conveys the idea the new generations are brilliant but unwilling to work.
The sentence "They’ll do great things if they're willing to dig" suggest "dig" refers to work or make an effort. Based on this, the meaning of this word is "working hard towards a goal."
Learn more about generations in: https://brainly.com/question/10736907
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