Persona Engineering: A Field Guide to AI Synthetic Personas — Ishan Anand, InsightSciences.ai

Ishan Anand discusses synthetic personas for market research, drawing parallels to weather forecasting. He outlines three key failure modes—latent confounders, prompt sensitivity, and difficulty predicting actions—and explores techniques like fine-tuning and calibrated prompting to overcome them. Anand stresses the importance of validating personas against human data using distributional metrics and establishing a "noise floor" based on human-to-human consistency, advocating for their use as economic actors and complements to, rather than replacements for, human research.