"speaker_note": "Open with the central insight: your charts are evaluated before your model is — and most people find out the hard way." "speaker_note": "Share the personal story — 0.94 R² model, ...
"angle": "Python will give you a wrong answer and never crash \u2014 here's the silent number-vs-string bug that fools every data scientist" "startSec": 141.92 ...