Thursday, January 21, 2010
Agua is Vida - Water is Life
Tuesday, January 19, 2010
Who's Afraid of the Big Bad Wolf?
Most children grow up listening to stories such as Little Red Riding Hood or The Three Little Pigs where the wolf is often portrayed as the bad guy. Unfortunately, this misperception doesn’t change with age, even adults associate wolves to be wild, dangerous and unruly. Fair enough, wolves are dangerous, but they are also key players in balancing nature’s delicate ecosystems. In fact, it wasn’t until cottonwood trees disappeared (unanticipated consequence) that the folks managing Yellowstone National Park realized the true importance of wolves.
After some research it became clear that the removal of wolves was directly correlated to the disappearance of the cottonwood trees. When the wolves were taken out of the eco-system it allowed the elk to graze in areas they normally wouldn’t due to predation. The elk started grazing in areas such as meadows and areas near streams and they ate cottonwood trees, saplings and seeds, which increased the stress of the cottonwood population and decreased the quality of the ecosystem. This caused an effort to re-introduce wolves into the Park and thus an increase in the wolf population. This is an example of nature responding to critical changes in the eco-system which could have been accounted for if the policy makers would have looked at the system as a whole.
Saturday, January 16, 2010
No One Wants to be a Drug Addict
As you can see, the patient continues using the prescription drug and the body continues to build immunity to the drug. By the time the doctor cuts the patient off or decreases the supply, the patient is now addicted. This is when it gets really bad, the patient switches to intravenous use of the drug to speed up the process and often switches to a more effective version of the drug, heroin. To satisy the addiction the patient will look to the street pharmacists to satiate the addiction.
Although there are various other reasons how addictions are formed, for this specific case I will focus on a feedback loop I know to be true.
In this situation the variable I would track over time would be the prescription of narcotics such as the ones mentioned above.
Hard elements:
Drug over-doses
Narcotics prescribed and duration
Doctors earn money for prescribing medication
Soft elements:
Lack of incentive for doctors to value patient health.
Social acceptance for drug users