We're dealing only with administrivia, some of which can be handled online but much of which requires phone calls and letters and a whole lot of persistence.
But the lower the response rate the harder and more expensive it becomes to realize that promise, which requires both calling many more people and trying to correct for "non-response bias" by giving greater weight to the answers of people from demographic groups that are less likely to respond.
This pure form is still rare, however, because most people still use traditional phones, which requires people calling from a PC or an internet phone to "bridge" over to the phone network.
(Weill Recital Hall, Carnegie Hall. For free tickets, which are required, call 212-319-5300, ext. 222. March 30 at 8).
(Paula Cooper, 521 W. 21st St. For reservations, which are required, call 212-255-4022. Mat 22 at 7).
(Fifth Ave .at 34th St. For reservations, which are required, call 212-817-8215. Nov. 6 at 6 30).
(Weill Recital Hall, Carnegie Hall. For free tickets, which are required, call 212-319-5300, ext. 222. March 27 at 8).
(Christie's, 20 Rockefeller Plaza. For reservations, which are required, call 212-988-7700, ext. 210. Dec. 4 at 6 30).
(Museum of the City of New York, Fifth Ave .at 103rd St .For reservations, which are required, call 212-534-1672, ext. 3395. Oct. 9 at 6 30).
(11 E. 52nd St. Nov. 5 at 7 30. For free tickets, which are required, call 212-319-5300; for fulistinging, see www.acfny.org).org
