(Bloomberg) -- A discussion of the day's Bloomberg BRIEF. You can read analysis and other news, market data and expert commentary from the world's most trusted economists and analysts in the Bloomberg BRIEF digital newsletters. Subscribe through bloombergbriefs.com or the Bloomberg Terminal function {BRIEF}.\u0010\u0010Guest:\u0010Carl Riccadonna, Chief US Economist for Bloomberg Intelligence, on today's economic news: growth forecasts, the achilles heel of the economy (jobs), and a penchant for Q1 to come in weak.