But London has a particular difficulty.

ECONOMIST: Britain's Olympic bid

" Kolakowski saw this as "a particular instance of the difficulty inherent in any doctrine which views genuine human effort as the unique source of moral value while at the same time refusing to acknowledge any human contribution to the results of that effort.

WSJ: Book Review: Is God Happy?

There again, I wouldn't want to expel anyone from the church if they felt that that particular doctrine was a difficulty for them.

BBC: NEWS | Programmes | Breakfast with Frost | Hope on faith

MacDorman's current focus is on the uncanny valley with respect to empathy: that is, is the uncanny valley phenomenon related to a person's difficulty in identifying with particular computer-animated or robotic characters in films?

CNN: Why zombies, robots, clowns freak us out

The case illustrates the difficulty of pinning a side effect to a particular drug based on the scant reports of side effects that come to the FDA. It is extremely difficult to link a side effect, like an inflamed pancreas, with a particular drug.

FORBES: Dark Cloud Over Amylin

Manpower was the real problem, and in particular the difficulty of persuading engineers and skilled tradesmen to leave the United States to dig a ditch in a fetid tropical swamp.

ECONOMIST: American canal building

In a few short years, hospitals that serve seniors in particular will begin closing, and retirees will have increasing difficulty obtaining access to care.

FORBES: Why Senior Citizens Should Prefer Ryan's Medicare Plan To Obama's