Marijuana Use is Self-Regulating

There is a very nice self-titering aspect to cannabis. Each puff is a very small dose; the time lag between inhaling a puff and sensing its effect is small; and there is no desire for more after the high is there. I think the ratio, R, of the time to sense the dose taken to the time required to take an excessive dose is an important quantity. R is very large for LSD (which I've never taken) and reasonably short for cannabis. Small values of R should be one measure of the safety of psychedelic...

 Putting Statistics in Perspective

Now let's get a handle on what it really means to have a 1-in6,500 or a 1-in-13,000 chance of dying. It's as if you lived on an island in the South Pacific with a population of 650. You make your living by swimming around in the azure waters around your idyllic paradise and spearing fish for dinner. Yum, yum. About once every ten years, a stray shark happens by and eats a swimmer. That's a 1-in-6,500 chance of any one person being eaten by a shark, just the same as the odds of dying in an aut...