A French-born Pole, Mr Polanski has dual citizenship, thus benefiting from France's restrictive extradition laws.
Over the years, the state has used it to drive industry to develop cleaner cars and cleaner fuels, thus benefiting not only California but the whole country.
It would not, they said, eliminate contestants along the way, but instead would allow all the youngsters to continue performing, thus benefiting from accompanying coaching and master classes.
In the campaign, Mr. Obama said the public plan would compete with private insurers on the price and quality of care, thus benefiting consumers.
Although a weaker dollar would effectively raise the cost of goods imported from overseas, it would lower prices for exports, thus benefiting the American multinationals.
On the other hand, economists regard education as an investment which builds "human capital", making individuals more productive and thus benefiting society as a whole.
Cameron was also being advised that he needed to shift the political agenda away from Europe to the economy, and setting up a massive confrontation with Merkel would only keep immigration at the top of the agenda, thus benefiting Ukip.
For another, the money generated does not all go on imported luxury goods, thus benefiting someone else's economy, but oils the wheels of the rest of our own economy through investment and credit facilities.
Or seen the education and development in rural Botswana, where tourist money swells the country's coffers, thus benefiting the whole population, not just those few communities close to the parks?
