Entropy and Dark Energy
Put it simply, entropy is the measure of order in the universe. It’s a measure of uncertainty or randomness. The higher the entropy, the more disorderly the universe’s. It’s like your bedroom, a messy room is a high entropy state because it’s much harder for you to be certain of where any specific object could be. For example that sock you lost last week but once you clean everything up and make and eaten orderly, it’s much easier to be certain about where an object will be.