When I was a lad, the poor were thin. Indeed, I can remember the names of my two classmates from high school who were just a little bit chubby. I will not mention names.
Some public goods can be not provided much at all if even a few do not contribute – free ride. These are called weakest shot public goods. The link in the chain is only as strong as the weakest link for some public goods. The fighting against communicable diseases is an example of that.
Similar examples would be the protection of a military front, taking a convoy across the ocean going at the speed of the slowest ship, or maintaining an attractive village/landscape (one eyesore spoils the view).
Many instances of teamwork involve weak-link elements, for example moving a pile of bricks by hand along a chain or providing a theatrical or orchestral performance (one bad individual effort spoils the whole effect.)
Another example of weakest shot public goods is community cooperation after disasters. The quality of the public good provided is equal to the contribution of the weakest person who may start a criminal rampage despite the good efforts of everyone else.
People tend to be more cooperative after natural disasters. They realise their contribution is more important than normal to the maintaining of the social fabric which is currently hanging by a thread.
Vaccinations are example of a weakest shot public good. The quality of herd immunity depends fundamentally on just about everybody contributing by getting vaccinated. Not all public goods depend on the some of those contributions made. In some cases just a few people choosing to free ride can greatly undermine the public interest.
The reverse of a weakest shot public good is best shot public goods. Example of this is the development of vaccines themselves. The public good is only as good as the best effort at developing the new vaccine with all the others efforts pointless because the best of the vaccines is chosen.
The most curious people in New Zealand to oppose measures to address the under provision of weakest shot public goods are the New Zealand Greens.
Herd immunity protects those who cannot be safely vaccinated including new babies, those for whom the vaccine fails, which occasionally happens, and those with compromised immunity such as adults receiving chemotherapy.
We are all in this together. It is time for the New Zealand Greens to stop pandering to those are only think of themselves and what a free ride on others including the very sick and new babies.
Herd immunity requires vaccination rates of about 94%. The near universal vaccination rates required for herd immunity are to smaller margin to pander to an awkward squad who do not want to vaccinate despite the harm they do to others.
Harm to others is grounds and has always been grounds for public policy and public health interventions. Instead, the Greens are anti-science, anti-public health.
Measles is the most contagious disease known to man. Seven children died in New Zealand in the last measles outbreak in 1991. The dead are already too many from the anti-vaccination quacks and cranks.
Like McDonalds, Greenpeace globally is a brand. I read the papers every day in detail but are utterly clueless as to who its leaders are. That is a deliberate branding decision so people cannot conflate the inevitably dodgy and far left backgrounds of its leaders and activist support base with self appointed environmental do-gooders brand.
That is no longer so in New Zealand where a middle-age political junkie retiring as co-leader of the New Zealand Greens will now be their CEO in New Zealand.
What is worse is the carrying on by the Greens about the retirement of Russell Norman to lead the Greenpeace in New Zealand.
If they wanted to maintain the political effectiveness of Greenpeace, they should have made a short press release congratulating him on his retirement and wishing him well in his new job and saying little more. The Greens should stop carrying on as though you have taken over Greenpeace New Zealand.
I do not wish Greenpeace well with its anti-growth, anti-science, anti-human agenda, so I hope this was a mistake and I hope I am not interrupting them in making that mistake.
Why Evolution is True is a blog written by Jerry Coyne, centered on evolution and biology but also dealing with diverse topics like politics, culture, and cats.
In Hume’s spirit, I will attempt to serve as an ambassador from my world of economics, and help in “finding topics of conversation fit for the entertainment of rational creatures.”
“We do not believe any group of men adequate enough or wise enough to operate without scrutiny or without criticism. We know that the only way to avoid error is to detect it, that the only way to detect it is to be free to inquire. We know that in secrecy error undetected will flourish and subvert”. - J Robert Oppenheimer.
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