Early mathematicians wrote out their calculations in longhand rather than using symbols as shorthand. It wasn't until 1575 that Robert Recorde used what evolved into the modern "equal" sign, as well as "+" and "-," writes Joseph Mazur.
Inefficient interviewing habits can cost employers valuable time, Judi Cogen writes. Among her tips for making the right choices for who to meet with: Develop well-written job descriptions before you even start looking at resumes and use phone interviews to narrow the number of people you must meet in person.
Human resources professionals shouldn't blindly accept the notion that social media is something to fear -- even if the advice comes from lawyers -- and should instead experience it for themselves, Lisa Rosendahl writes. "Be prepared to provide the leadership necessary to successfully address the social media questions facing your organization," she writes.
The U.S. government's initiative to double exports during the next five years might boost the sector, but it will not necessarily create jobs, executives and economists said. Employers have ways to increase production without adding workers, they said, including increasing workers' productivity, expanding hours of part-time employees and fully using facilities.
The Museum of Modern Art in New York City has inducted the "@" symbol into its design collection, a mark of prestige for the commonplace keyboard presence. According to a MoMA senior curator, the adaptation of @ "to resolve a functional issue (excessively long and convoluted programming language) brought on by a revolutionary technological innovation (the Internet) -- is by all means an act of design of extraordinary elegance and economy."