The mechanism of action is perfectly well understood, "correlation". Red meat consumption correlates with unhealthy diet and unhealthy lifestyle.
The mechanism of action is a chain of causation. For example, the acetaldehyde in cigarette smoke damages DNA. When a certain gene is damaged, it becomes an oncogene which leads to cancer.
A correlation is not a causation. That's math.
No, Amsterdam isn't like that *in all places*. Most of the city is actually quite free from traffic due to policies that keep traffic out of the city.
That's most cities I think (I haven't been to most cities, so I'm going off a sampling).
Cities mostly have a few areas that are crowded with traffic, but the rest is fairly easy to drive around. San Francisco has a reputation for bad driving, but it's only a few areas that are actually bad.
There are multiple deeply clever bits in this argument.
Which is the part that you think is deeply clever?
"Don't discount flying pigs before you have good air defense." -- jvh@clinet.FI