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He wasn't scrambling to fix broken formulas on Sunday nights. He was exploring new data, building predictive apps, and even teaching the interns the basics of the associative model.

The fluorescent lights of the 42nd-floor conference room hummed with a low, headache-inducing buzz. Marcus stared at the projection screen, where a sprawling Excel spreadsheet glared back at him like a jagged mountain range of raw data. udemy qlik