The park management claims all of them can be explored without guides but they admit that people do go astray with disturbing frequency.

BBC: Trekking in Rio de Janeiro

Some defenders of bilateralism admit all this, but cling to one argument they regard as clinching that bilateral agreements are at least possible, whereas the chances of concluding Doha seem ever more remote.

ECONOMIST: Trade agreements

That being so, would it be more honest for politicians to admit that they cannot really offer "parent power" but they can offer an equal chance to all.

BBC: ANALYSIS