Susan Crawford, Harvard Law professor and former Special Asst. for Science, Technology, and Innovation Policy during the Obama administration, discusses her new book, "FIBER: The Coming Tech Revolution—And Why America Might Miss It." Bill Barker, Portfolio Manager of the Motley Fool Small Mid-Cap Growth Fund, on why it’s a good time for both growth and value investors in mid-caps. Jeff Saut, Chief Investment Strategist: Equity Research at Raymond James, on why he's bullish on equities in 2019. Karen Ubelhart, Industrials Analyst for Bloomberg Intelligence, on Caterpillar's biggest quarterly profit miss in a decade as a China slowdown hit demand. Hosted by Lisa Abramowicz and Paul Sweeney