Sanjay Mathur stands out among data investors because he actually built and ran a data science company (Silicon Valley Data Science) and later worked inside Apple on product and insights, and he holds patents in areas like trust networks, knowledge discovery, and data quality. His writing goes back to before the recent AI boom and focuses on turning data into real decisions, running companies through ongoing experimentation, and building privacy-first products, which gives him a more hands-on, builder-based reputation than most venture investors in the data space.