[onceKnowable]

>It’s not clear to me that anyone can predict the consequences of technology

That’s the whole point of the article, no one person can ever figure that stuff out. That’s why the public needs tone informed. No matter how educated (malicious or not) an “elite” is, they’ll never be able to predict as much as the general public will.

Yet a wider public debate can.

Your example about greenhouse gases is a good example of this. Forget about the celebrities for a sec and look at the big picture:

The guys in the hydrocarbon industry were experts at their jobs: developing oil, coal & gas and selling those products. Likewise the car industry, experts at building and selling cars.

Their expertise is in building their particular products and selling them. They could not have been expected to understand the negative environmental effects. And moreover, it’s in their interest to ignore the negatives associated with their products because it’s much more profitable for them to produce cheap products that require little R&D.

It took insights from the general public outside those industries to realize how those products affect the population as a whole:

- Burning hydrocarbons releases far more CO2 than the planet can scrub via the carbon cycle, which has lead to the greenhouse effect. Not only that but certain types of coal produce the smog that once blighted our cities and literally killed people with weak respiratory systems. Not only all of that but the lead that was added to gas to prevent engines knocking, kills people too.

- Emmisions from cars not only add CO2 to the greenhouse effect but other car emissions such as carbon nanoparticles, Nitric Oxides, sulfuric compounds also result in measurable deaths among the populations living among those cars.

As a result, laws are passed to make cars release less emissions and also to reduce societal dependence on hydrocarbons. The public debate resulted in the population realizing that there are health hazards to both individuals in the short term and global climate in the long term, and resulted in laws being passed to reduce these health hazards as low as is possible right now.

Without informed public debate we’d never have realized that these negative effects occur and we’d never have saved as many lives as has been saved now that our cities are not drenched in lead and Nitric Oxide saturated smog.