Cannabis more readily distorts perception of time and space. Unlike alcohol, cannabis is not known to enhance the effects of certain other drugs, induce a limited degree of tolerance or, over the long term, cause physical damage to body tissues directly or by dietary deficiency. Cannabis may well, however, be at least as dangerous as alcohol as an influence on driving or other responsible activity. This sharpness of similarity and contrast is considerably blurred by the effects of very different social settings. Alcohol in our culture is in general use and not illegal.
Cannabis is used by a minority, and mostly against the law.
Drinking patterns vary widely by country and by social class. Though many drinkers, particularly those who can be regarded as alcoholics, drink to get drunk, alcohol-users normally take a small amount, seeking only mild effects and a little social relaxation. The patterns of cannabis-smoking are more obscure. Experienced cannabis-users often smoke cannabis for a mild intoxication that they feel will improve their performance in a particular social setting or activity, e.g. playing jazz. Many smokers, however, take the drug in anticipation of a few hours of intense mental elation without the aggressive impulses often associated with taking large amounts of alcohol.