• David Hoffman: full of existential questions about the potential independence of mayoral appointees

Mayor Rahm Emanuel and top city officials are working “diligently” on big plans to upgrade the city’s infrastructure by cutting deals with private firms.

But not even the people he’s picked to sign off on the plans know exactly what they are yet, and one of them had an interesting idea Tuesday: maybe, at certain points, when “appropriate,” they should ask a few questions first.

The suggestion came from former city inspector general David Hoffman, one of the five Emanuel appointees who make up the board of the city’s new infrastructure trust fund. During the board’s second-ever meeting, Hoffman made it clear that just because he’s on the board doesn’t mean he knows how it’s going to work or what it will be allowed to do.