Another story examined the role of microbes in human life. Everything from the beneficial bacteria in our stomach to more esoteric microbes that can affect our behavior. The point seemed to be that microbes could be the master controller of human behavior. The full NPR story is here.
Both stories are admittedly intriguing and the scientists interviewed are not crackpots. So how do we really evaluate the science we hear and apply it sensibly in our lives?
One thing to keep foremost in our minds is that a relationship between two events does not tell us anything about the causality that may or may not link them. Because schizophrenia increased when we started keeping cats as pets does not establish a causal relationship between cats and schizophrenia. In fairness, the relationship between certain mental illnesses and toxoplasma has been reported elsewhere, I'm exaggerating somewhat to make a point.
The relationships between these issues is complex. There is more interdependence, or what statisticians call covariance, than direct causal relationships among the variables. It is more interesting to talk about the possibility of grand relationships and science fiction than to tackle the nuances of the relationships. Who wants to read a dry science article when we can talk about protozoa taking over our minds.
So the point is to take science reporting at face value. Dig deeper if a topic interests you and treat grandiose claims as what they are, bad science.
Both stories are admittedly intriguing and the scientists interviewed are not crackpots. So how do we really evaluate the science we hear and apply it sensibly in our lives?
One thing to keep foremost in our minds is that a relationship between two events does not tell us anything about the causality that may or may not link them. Because schizophrenia increased when we started keeping cats as pets does not establish a causal relationship between cats and schizophrenia. In fairness, the relationship between certain mental illnesses and toxoplasma has been reported elsewhere, I'm exaggerating somewhat to make a point.
The relationships between these issues is complex. There is more interdependence, or what statisticians call covariance, than direct causal relationships among the variables. It is more interesting to talk about the possibility of grand relationships and science fiction than to tackle the nuances of the relationships. Who wants to read a dry science article when we can talk about protozoa taking over our minds.
So the point is to take science reporting at face value. Dig deeper if a topic interests you and treat grandiose claims as what they are, bad science.
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