Chicago's technology incubator, 1871, seeks public funding to add 50 percent more space. The not-for-profit expanded by 25,000 square feet last year, with the state of Illinois kicking in $2.5 million for the expansion. 1871 CEO Howard Tullman now wants to add another 40,000 square feet, and he's seeking a state-backed loan for an undisclosed amount to cover construction costs. However, the potential state-backed expansion concerns privately runco-workingspaces that rival 1871. We hear the latest from Crain's Chicago Business reporter John Pletz.