pooch, your post is appearing as [dead] to me so your account may be hellbanned, which you may want to get fixed since you've made an informative post that many users won't be able to see.
"If one cell explodes or melts, you still essentially have a fire in progress. Protecting the other cells buys you time, but how much time do you have when there is fire on a plane?"
"Obviously its a design issue, probably very complex that Boeing simply doesnt have the time and money to investigate thoroughly."
"So this is a patch. Nothing I have read indicates an engineering approach was taken to prevent the previous result."