My study was admittedly limited, more of a back-of-the-envelope estimate than a rigorous examination.

FORBES: Gun Death Data Points In Both Directions

The rub is obviously the painstaking research that goes into identifying such companies, including rigorous examination of their management teams.

FORBES: Billionaire Fund Manager Mario Gabelli: 'I Like PHD's: Poor, Hungry And Driven' (And Some Investment Themes)

He told BBC1's Andrew Marr show that other countries had more rigorous examination regimes and schools in the UK needed to catch up.

BBC: Government to phase out modular GCSEs from 2012

The proposed changes need to be subject to a thorough and rigorous examination, which the consultation initiated on 12 November 2012 is not.

BBC: UK Politics

The Commission is tasked with providing a thorough and rigorous examination of how, since its creation 100 years ago, Fed policy has affected output, employment, prices and financial stability over time.

FORBES: The Budget Stalemate Shows The Need For Monetary Reform

This year marks the seventh annual Switchies, which are decided based on a rigorous examination of the opinion of me, and do not reflect the opinion of Engadget or its editors.

ENGADGET: Switched On: The 2012 Switchies, Part 1

But he added: "This is a really good opportunity for our system and the secretary of state to look at our examination system and ask whether it is rigorous enough, whether it's credible enough, whether what's happened over the last few years in terms of resits, early entries and the modular approach to to examination is actually raising standards".

BBC: UK