She had a PhD from MIT. She quit after 6 months because nobody knew what sls_txn_f47 meant.

Dr. Jennifer Park walked into my office on her last day. "I'm sorry," she said. "I really wanted this to work." I'd recruited her personally. PhD in Machine Learning from MIT. Five years at Spotify building recommendation engines. Above-market salary. Equity. The works. She lasted six months and four days. "What happened?" "I spent six months trying to do one thing: build a recommendation engine. At Spotify, I built similar systems in six weeks." "And here?" "Here, I spent six months just trying to understand the data ." She opened our Snowflake warehouse. 847 tables. sls_txn_f47 usr_bhv_ag_01 car_lst_vw_2 bid_hist_tmp "Nobody knows what these mean," she said. "The engineer who built them left two years ago. I spent three months reverse-engineering the schema. Then I discovered we have seven different definitions of user_id across tables. Seven." "I'm not a bad data scientist," she said. "Your data is just impossible to work with." Four months later We hired Alex. Same challenge: "Buil