That's what I thought of when I read this in George Orwell's "1984":
"Big Brother is infallible and all-powerful. Every success, every achievement, every victory, every scientific discovery, all knowledge, all wisdom, all happiness, all virtue, are held to issue directly from his leadership and inspiration."
You can literally learn most of Esperanto grammar in the time it takes to learn the difference between "soy/estar" and "por/para" in Spanish.
Those are just two Spanish concepts that students spend days learning. Look at a table of contents in a Spanish textbook and count the concepts. Now review an Esperanto textbook. It was designed for fast acquisition. Things that you have to learn in any language - like numbers, verb forms, days of the week, time, spelling, etc - are designed to be as simple as possible.
Take a book like "501 Spanish verbs" and adapt it to Esperanto. The book will shrink down to one page, since all verbs are regular. That page will further shrink down because there are fewer conjugations. All conjugations that do exist are composable - each conjugation dimension can be applied separately. They are even consistent between parts of speech.
How many people, who are making a serious multi-year effrot in learning a foreign language, no how to say "flutter" in that language? It's not unlikely that Esperanto learners will know that word in the month or so (after they learn the word for "fly", and learn how to make diminutives). Through these mechanisms you only need to learn a fraction of vocabulary, since from a root word you can drive many others.
Planet Money had an episode about "revenue-neutral carbon tax", where all the money collected is returned back to the tax payers, to spend however they want.
The point of this tax is not to raise money, but to change behavior. This, a family that drives to work and school every day will pay more carbon tax, but this will be offset by the tax refund (or lower income tax). And a family that finds ways to reduce their carbon footprint will benefit from the tax refund and able to spend it on other things.
WA state had a carbon tax initiative but the revenues went to environmental efforts, and it failed. I think if it were made revenue-neutral, or heck, even made as an overall tax-cut to please the fiscal conservatives, I think it would pass (although it would face pushback from environmentally minded about not doing enough).
I like it a lot, but the problem is the major industries that will be heavily impacted/closed down as a result. They have immense political power, and I don't see any way around that. Hope I'm wrong.
And that's of course just one country out of 200. There is no local solution to global warming!
They tried that here in Canada, and it is both too small to have much impact, and getting massive pushback from the Conservative party.
You have to keep in mind that even if it’s revenue neutral, explaining the scheme to taxpayers is going to be difficult, and your opponents are going to try their darndest to make it sound unappealing, even if it means spreading misinformation.
The difference is if they studied the answer, but didn't grasp the material, they got information to pass the test (maybe), but probably didn't get useful information.
I guess if you stop at each point and ask 'what could go wrong here, and how would you debug it' and they answer that well, then they've gotten the information enough.
They are very active in progressive causes. Perhaps when they sold the company to Unilever they negotiated some deal that allows them to continue to use Ben and Jerry website for their activism?