You want to decrease the prevalence of heroin use in your county by 50
percent over the next five years. You consider three basic alternatives:
methadone maintenance, law enforcement pressure, and drug education.
Variants for each one have to do with the funding sources, in that state,
federal, and counry money can be used in different degrees (although not
all mixes of funds available for one approach are also available for the
other two). Variation is also possible according to who administers
the program(s): nonprofit organizations, county employees, or state
employees.
You can also consider variants of scale and scope. You might wish to consider
two possible sizes for your methadone program, for instance.