How Machine Learning Works and Why It’s Changing Everything in 2025
Machine learning is a branch of artificial intelligence that lets computers learn from data instead of being explicitly programmed. In simple terms, an ML system finds patterns in example data and uses those patterns to make predictions or decisions on new data. As AI pioneer Andrew Ng famously put it, “AI is the new electricity,” highlighting how it can transform every industry just as electricity did knowledge.wharton.upenn.edu. ML is behind everyday technologies like voice assistants, face recognition on phones, and recommendation feeds on social media. It powers everything from email spam filters to self-driving cars. The core idea is that with enough relevant data, a machine can “figure out” the relationships on its own and continue improving over time.
