What is time, really?

Why this question matters today Time feels obvious, yet it's deeply puzzling. Sabine treats it as several linked questions: why time seems to pass, how we separate now from past and future, where time comes from, and what we mean when we speak of it. She links everyday life to physics to clarify the issue. ⏳

What you’ll see The talk moves from experience to theory: the feeling of flow is tied to memory, not a physical stream. It then examines time in physics: as a dimension in spacetime, not a substance; relativity alters simultaneity; and entropy points to a directional arrow of time. The aim is to blend philosophy with physics for practical clarity. 🧠

Key insights and moments A core idea: time is a parameter in equations, not a thing you travel. There is no universal present once relativity is in play. Another key point ties entropy to time’s direction, explaining past versus future. Relativity reshapes ordering of events, yet local experiences stay consistent. The video shows you can hold multiple, valid views at once. 🌌

Closing thought The payoff is a clearer, more nuanced view of time—helping you navigate physics and daily life. ⏱