No-one is arguing that pharmaceutical companies should not demonstrate the value for money which their medicines deliver so that NHS can strike the right balance.

BBC: 'Pharma companies aren't profiteering'

There is no longer any automatic right to charitable status - with the Charity Commission requiring private schools to demonstrate that they qualify.

BBC: Private schools want legal ruling on charity status

Optimizing the peak-end rule is about capturing the moments of customer experience that demonstrate how your purchase pathway rates from poor to great because there is no in-between.

FORBES: I Experience, Therefore I Shop

Over the summer, iAdvance released a study purporting to demonstrate that regions of the country served by non-Bell carriers -- those with no long-distance restrictions -- tend to enjoy more high-speed Internet backbone interconnection points.

CNN: SBC lobbyists undercut by DSL rollout

The new Counter Fraud Service ran into a slight hitch initially: no-one knew just how big the problem was, and without that kind of information it was difficult to demonstrate that anti-fraud work is actually worth the money.

BBC: Hitting back at healthcare graft

Alex Castellanos, a Republican strategist and CNN contributor, conceded Obama "won tonight on points, no doubt about it, " but added that Romney showed the leadership style of a commander-in-chief to demonstrate that making a change in the White House would be safe.

CNN: Campaign enters final stretch as Obama takes final debate