The difference between will not and cannot is a slippery concept that is hard to nail down. It takes time, especially if there is an established pattern for blaming the patient for not taking better care of themselves. Realising that the thought of doing better never enters their mind because of a chemical malfunction in the brain is a strange idea at first. Once staff members catch on to the idea, the whole atmosphere on treatment units' change, but it takes a year of consistent, informal education.