# Why did it all start ordered?

**Why was the early universe so ordered?**

The arrow of time rests on the early universe having very low entropy. Nothing in the basic laws asks for that, and it remains one of the big open questions.

Connects to:
- [The arrow of time](https://mapideas.org/i/ti_arrow)
- [The expanding universe](https://mapideas.org/i/as_expansion)

Sources:
- [Wikipedia: Past hypothesis](https://en.wikipedia.org/wiki/Past_hypothesis)

Source: https://mapideas.org/i/q_time_order · open on the map: https://mapideas.org/#q_time_order