# The arrow of time

Most basic laws of physics work the same running forward or backward. Yet eggs break and do not unbreak. The usual answer is entropy: there are far more disordered arrangements than ordered ones, and the early universe began in an unusually ordered state.

Connects to:
- [Time](https://mapideas.org/i/time)
- [Time and motion](https://mapideas.org/i/ti_relativity)
- [reaches reality?](https://mapideas.org/i/c_reality)
- [Why did it all start ordered?](https://mapideas.org/i/q_time_order)
- [Does time flow?](https://mapideas.org/i/q_time_flow)
- [Why do we remember only the past?](https://mapideas.org/i/q_time_future)
- [Is time a line or a circle?](https://mapideas.org/i/q_time_shape)
- [What was there before?](https://mapideas.org/i/q_astro_before)
- [Deep time](https://mapideas.org/i/ea_deep)

Sources:
- [Wikipedia: Arrow of time](https://en.wikipedia.org/wiki/Arrow_of_time)
- [Wikipedia: Entropy](https://en.wikipedia.org/wiki/Entropy)

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