Talk:An empty casket/@comment-97.89.173.35-20170622173821/@comment-25597633-20180503223843

The formula is correct, but Fallen London uses accounting rounding. It's the same as normal rounding, but at exactly X.5, you round towards the nearest even number. So you get:

0 -> 0 1 -> 0 2 -> 1 3 -> 2 4 -> 2 5 -> 2 6 -> 3 7 -> 4 8 -> 4 9 -> 4 10 -> 5