All these landmarks were named for Dr. Frank J. Sacherer, a theoretical physicist at CERN, who was a world-class expert on the behavior of particle accelerators.
You may have learned, in recent months, that you can't actually become a world-class expert in anything you like, merely by putting in 10,000 hours of practice.
McEwan is, in other words, a world-class expert on human violence -- its rules, roots and reverberations -- and in his more recent work he has set his diagnostic skills to work on larger confrontations.
And sometimes the lead partner had an opportunity to involve a world-class expert from an office not only in the same country but within driving distance and didn't.
For instance, a computer science course at one university could incorporate an online module on cryptography or database design taught by a world-class expert in that specialty at another university.
Prof. Stephen Stigler is a world-class expert on the history of statistics.
When challenged to back up his claims with clinical evidence, Mr Trump said: "I am the evidence", adding: "I am considered a world-class expert in tourism, so when you say, 'where is the expert and where is the evidence', I'm the evidence".
Campbell is a world-class expert on public social provision, who uses a terrible auto accident that happened to her own young sister-in-law to reveal the sorry state of US social protections for many citizens of modest means and to remind us what is at stake in ongoing efforts to improve vital social protections for all Americans.
Neurologist Daniel Levitin says "the emerging picture from such studies is that 10,000 hours of practice is required to achieve the level of mastery associated with being a world-class expert-in anything.
