I've come to a conclusion.
After witnessing certain types of behaviour recently.
If you're naturally fairly intelligent, citing Eric as an example, you'll easily be able to cope with the chemical changes in your brain, that smoking pot brings about.
However, those born a little simple-minded, can't cope, and end up being even simpler.
If cannabis was to be legalised, perhaps they should set a nice little examination paper, to decide who's allowed to have it.
I'm not seeing it being a massive group, of those allowed to smoke the weed legally.
