This may be because it is their only practical option: patents are costly to get and often provide only weak protection.

ECONOMIST: The future of innovation

It is not a practical option to have rationing of care because there is no medical test for impotence and therefore it would be almost impossible to apply fair and consistent criteria for treatment across the board.

BBC: News | Health | Viagra: a great British invention

As a unique and practical option for mobile users, the GALAXY Win is equipped to handle demanding tasks while still providing an effortless user experience with intuitive features including dual SIM support for a seamless work and life balance, a large display for optimal viewing, Easy Mode for simple access to most used functions, and many more.

ENGADGET: Samsung Galaxy Win hopes for Chinese smartphone success with a mixed bag of specs (updated)

Dr Boylan said this meant a termination was not a practical, legal option at that time.

BBC: Savita Halappanavar

There are, however, many practical problems with this option, as the BBC's Stephanie Flanders has pointed out.

BBC: Budget 2013: Radical options for the UK economy

So, financial education in our high schools should include practical experience, and it should not be an option that many students can and will avoid.

FORBES: 'The Best Form Of Consumer Protection? Self-Protection'

From a practical perspective, a degree in most fields other than education offers more earning potential while still retaining the option of pursuing a teaching career without any detrimental effects.

FORBES: Education Majors Earn Less Regardless of Career