First scientists were not advocating spending 50 Trillion Dollars on something, they were there to answer questions. Second the actual cost of transitioning to 100% renewable energy is unknown but it isn't like the government is going to write out a check for $50 T which is the picture Kennedy was adapting to paint.
In fact most of the investment in green energy comes from private investment into companies like First Solar and Plug Power not from the government. Companies that, btw produced 190,000 new jobs last year.
The fact is the actually cost vs return to the government is largely an unknown. One can certainly reasonably argue over the amount of assistance to boost green energy that is appropriate for the government but there is no certain way to put a price tag on all the capital costs minus the return to the economy in the way of jobs created, products sold especially exported, savings to companies and home owners on their utilities bills etc. not to mention the savings in health care costs from breathing cleaner air free of sulfur dioxide and other harmful chemicals produced by coal fired steam plants. If in fact there is a net cost, I would argue that it's just as likely there is a economic benefit. This would be a major challenge for a team of economists but is not task a for a scientist regardless of how smart they are.
This was a clever trap set by Kennedy and the scientist fell right into it. Now his message will be "they are asking us to spend $50T of your hard on money on green energy" which of course is a total lie.
Your advocacy has filtered your perception. First, the Goldman Sachs scientist understands cost-benefit analysis. They were there as advocates. You don’t get to advocate as an “expert” and then claim a lack of knowledge about the cost (economic and otherwise) of your advocacy. My gosh, you are advocating to a political body. It’s much more likely they did not want to admit the cost. No one believes they don’t have an idea.
I think Kennedy stated the cost fairly. Go back and listen. Philanthropy will not budget the change desired. The public will pay, one way or the other, for the change they seek.
And, if you cannot estimate the impact on the thing you claim to fear, this is simply a shot in the dark asking government to pick the winners over the losers without any tangible reason. That fails a cost-benefit analysis test. One of Kennedy’s obvious points.
The greening of the environment has a positive health benefit, as well. Right? If the fear does not exist, the damage done by changing quickly to unreliable sources of energy is certainly not worth it. If you claim the fear and cannot show how your solution actually resolves the threat, you have lost. Or, should lose.