Any computer-based illustration involves an act of interpretation, Dr. Hancock said, citing, for example, a decision to depict morning mist near a great circle.
Costolo said the job of Twitter CEO had come to involve resolving complex geopolitical issues, citing for example Iran, where authorities use the site to communicate while blocking citizens' access.
"There is an argument for maintaining the use of secret evidence in some cases," Mr. Martin said, citing, for example, a case of a suspected terrorist entering the country illegally.
Others remain skeptical, citing for example Congress's annual routine of blocking cuts in Medicare payments to doctors that otherwise would occur under a law intended to restrain Medicare spending.
But some landlords in the area "have lowered their free-market rents by around 10percentt," Ms. Frechter added, citing, for example, "some studios that are down from $1,100 to $950".
The groups portrayed him as insensitive to racial justice, citing, for example, an article he had written at age 21 recommending changes that would make Mississippi law against racially mixed marriages more effective.
"I would say I've been through almost three-quarters of the collection, and still find surprises and interesting things," Ms. Hatcher said, citing, for example, portraits made in the 1950s of the actor Christopher Walken as a child.
Mr. Tems also offered grim predictions about what might transpire under the law — citing, for example, the death in 2009 of the actress Natasha Richardson, who suffered a brain injury while skiing in Canada.
