Well, trials indicate that, if PrEP was made widely available, it would stop 15 out of every 20 HIV infections that would have happened without it, and therefore, according to the National AIDS Trust, it would be likely to save the NHS money in reduced HIV diagnoses and treatments.
Now that has changed, as men keen to make money have joined in, reducing the proportion of fish that women are able to dry.
Pointing to Pakistan, the committee said DfID's aid budget, which is expected to increase to £446m this year, from £267m in 2012-13, could be justified only if there was clear evidence that the money was effective in reducing the threat from Islamic extremism.
Don't forget about the money saved in reduced court costs.
Consider the time and money saved in reduced remediation, increased college-success rates and faster degree attainment.
Landowners also often invested the money in mechanization, reducing the need for labour and leaving more farming families, black and white, underemployed and in poverty.
This suggests that the large amounts of money invested through carbon markets in reducing such emissions may be having an effect.
Similarly, a 2013 Reason Rupe poll found only 35percentthoughtht raising taxes on wealthy households made a meaningful difference in reducing the money available for investing in business start-ups; 58 percent thought it did not.
As a consequence, during the last two decades there has been an increased interest by administrators and governments responsible for financing mental health services in reducing the money spent on inpatient services and consequently in LOS reduction.
Robert H. Frank, a professor of economics at Cornell, has pointed out that when Carter made a similar proposal it was defeated by opponents who argued that drivers would buy just as much gas as they did before, with the money they got back in reduced taxes.
