Doe is one of the baby boomers - a group that has been growing steadily in proportion to the rest of the population - who have used cannabis (marijuana or hashish) on a regular basis over a long period of time.

Doe derides the warnings of doctors who say long-term cannabis use affects the very brain functions that have enabled him to reach his present position.

"It's been graphically illustrated in autopsy results on young people who smoked cannabis and had the same kind of lesions on their lungs as heavy tobacco smokers who have been smoking three or four times as long.