Interacting with others who know a specific area better than you can enhance your own grasp of it, if only because they can articulate it in a way that hadn't occurred to you before.
It's a business and you need to have a grasp of that if you want to be successful on any level.
There's a sense in which Rosencrantz and Guildenstern depends on the audience having a grasp of Hamlet, even if they don't really know the play.
Frederick Ahl and Hanna M. Roisman believe that contemporary readers who do not know ancient Greek can gain a sophisticated grasp of the Odyssey if they are aware of some of the issues that intrigue and puzzle the experts.
They are expected to have an on-the-spot grasp of the statistics: if there has been a spike in burglaries from vehicles, the captain's interrogators will want to know what is being done about it.
The diminished confidence in Mr. Gore that some Democrats are expressing is a big change from last year's campaign, when Gore supporters argued that Mr. Gore should be elected because of his grasp of world affairs, if for no other reason.
Yet Tavernier remains awed by Renoir's grasp of improvisation, "as if the camera just happened to be there," and happily concedes that, when confronted by "Grand Illusion" (1937), "I felt I was seeing another type of cinema".
(Of course, the same Mr. Cameron once shocked his compatriots by saying that, in 1940, Britain was a "junior" partner to the United States in World War II a full year before the United States joined the fray, provoking some public questioning of his grasp of history. "If Winston Churchill were alive today," said Gen. Sir Patrick Cordingley, a former military commander, "he would be dismayed").
Hall's performance felt perfectly naturalistic — her Rosalind was absolutely real and present — and, at the same time, her delivery showed an adept grasp of Shakespearean verse: if you knew and loved Rosalind's lines, it was thrilling to hear the subtlety with which Hall delivered them.
Similarly, the rhetorician has a complete grasp of his method, if he discovers the available means of persuasion, though he is not able to convince everybody.
