Effective product development relies on judgment backed by facts, not just opinions or taste. Rick Rubin exemplifies taste as confidence in one's own preferences, a quality now highly sought after. However, the author argues that "taste is the new moat" is the wrong framing, advocating instead for research-driven approaches. True judgment is verifiable and rests on tested principles and user evidence, unlike subjective taste. Taste is a preference shaped by experience, while judgment can be explained, taught, and disproven. The author uses an wine coloring experiment and ATM layout studies to illustrate how perception can be influenced by expectations, not just objective reality. Generative AI exacerbates this by producing polished, aesthetically pleasing but potentially shallow outputs. Instead of taste, the focus should be on judgment rooted in established principles from figures like Fitts, Hick, Nielsen, and Rams. These principles, however, require careful application within their proven conditions. User research is crucial because general laws don't account for specific user behaviors and preferences. Beauty in design should be tested with users, as perceived attractiveness can vary significantly between demographics. Jony Ive's butterfly keyboard serves as a cautionary tale where aesthetic appeal didn't equate to functionality. The mistake is assuming a designer's taste aligns with the audience's. Measuring beauty as a user outcome, alongside task success, provides more reliable data. The author advocates for teaching principles over portfolios, emphasizing that confidence from experience is insufficient without feedback loops and evidence. Finally, the piece critiques "taste cultures" where the highest-paid person's opinion (HiPPO) dominates, arguing that facts and data should empower everyone to contribute, not just those with seniority.