Bridgewater's employee-rating system tracked even the lowest-paid workers — who could get dinged if the office ran out of soda, a book says

• Bridgewater employees have famously rated one another's performance in real-time.
• High-earning managers and lower-paid custodial staff were all subject to the public ratings, a new book says.
• Ray Dalio even fired an employee based on his peers' answers to a poll about him, "The Fund" says.

It didn't matter if you were one of the top bosses, or one of the lowest-paid people on the ladder: If you were an employee at Ray Dalio's hedge fund, you were going to get publicly rated — and a new book sheds new light on the process.