Many people recognize that technology often comes with unintended and undesirable side effects.

I hope I'm wrong but I am afraid that Iraq is going to turn out to be the greatest disaster in American foreign policy - worse than Vietnam not in the number who died but in terms of its unintended consequences and its reverberation throughout the region.

The truth is women use contraception not only as a way to prevent unintended pregnancies but also to improve their health and the health of their families. Increased access to contraception is directly linked to declines in maternal and infant mortality.

Contraceptives have a proven track record of enhancing the health of women and children preventing unintended pregnancy and reducing the need for abortion.

New Zealand needs to balance its environmental responsibilities with its economic opportunities because the risk is that if you don't do that - and you want to lead the world - then you might end up getting unintended consequences.

Probably the most visible example of unintended consequences is what happens every time humans try to change the natural ecology of a place.

I think it's brought the world a lot closer together and will continue to do that. There are downsides to everything there are unintended consequences to everything. The most corrosive piece of technology that I've ever seen is called television - but then again television at its best is magnificent.