There are a host of development, zoning, and legal issues that could easily undermine the plan or delay it for so long that the High Line could become the West Side version of the Second Avenue Subway.

In high schools, however, nearby fast-food and pizza restaurants can easily undermine the efforts in the school cafeteria.

That situation, he added, can easily undermine the authority of an American.

"It's a point of vulnerability that could easily undermine the stability of the country or even the region," said Roberta Cohen, co-director of the Brookings-Johns Hopkins project on internal displacement.

Critics of that say Microsoft could easily undermine it by making the unbundled version more expensive.

Many tribal structures in Afghanistan have been damaged, distorted or destroyed by decades of conflict and social upheaval, and power dynamics are complex, often overlaid by local conflicts and rivalries, thus steps to empower certain groups could easily undermine local stability'.

Each Member State must now fix its own priorities, and this could easily undermine the effectiveness of the entire programme, which would be a great pity.

The robust forecast is the latest result of a strong economy that is rewriting the budget outlook on an almost continuous basis by recasting projections for years to come, even though events could easily undermine those projections.

Never mind that most of the companies he touted are either in bankruptcy or trade for pennies a share, which could easily undermine anyone's analytic efforts.

So the fact that stocks fell early also showed how negative the environment for equities is right now and how any bad news can easily undermine positive developments.