But the tests cannot demonstrate yearly progress.
"We can demonstrate against Shafik, but we cannot demonstrate against the Islamists," Mr. Gad said.
"The F.T.C. cannot demonstrate a lessening of competition in crude oil sales to the West Coast," the companies said.
Nevertheless, the reporter noted, Albert "cannot demonstrate a direct connection between Chagnon's writings and the government's Indian policy".
Some people with considerable wealth do not make the grade if they cannot demonstrate a significant passion for the arts.
One of the bills would have required hospitals to report people who lack insurance and cannot demonstrate legal status.
But one senior member of an international NGO said: "We cannot demonstrate total impartiality in this conflict, but we are strictly impartial in our services.
In searching for the causes of other cancers, he argues, epidemiological data have led researchers astray, and by their nature they cannot demonstrate cause and effect.
Engineers say they are confident that the zeolites will be beneficial but say they cannot figure that into their official calculations because they cannot demonstrate what will happen.
Finally, the government argued that because global warming affects all states, California cannot demonstrate the "compelling and extraordinary" conditions necessary to merit a waiver.
Stock prices have skidded, venture capital has dried up and the public markets have closed their doors to those who cannot demonstrate how they will be profitable soon.
