Lol if you guys remember that picture of when Homer Simpson burnt his cereal...
Well the motto was; "For some things, there just isn't an excuse.."
Lol I was playing a game and in the guide it says;
"Water - Despite being 100QL, water tends to result in the highest failure rate when improving items."
If you just NEED to have the technical side to that quote.. (Gladius...)
QL = Quality, 100 is the highest possible. You can improve the QL of items using other items.. The failure rate depends on the quality of the involved items.