| ▲ | eru 4 days ago | |
> If two things e.g. both change over time, they will be correlated. No? You can have two independent random walks. Eg flip a coin, gain a dollar or lose a dollar. Do that to times in parallel. Your two account balances will change over time, but they won't be correlated. | ||
| ▲ | gwern 3 days ago | parent [-] | |