The decision to allow the Barnes Collection to move to Philadelphia is just the beginning of a long process. And are the Barnes’ projections realistic? “The Barnes has budgeted $150 million to build a 120,000- to 150,000-square-foot building, to move into it, and to create an endowment.” Some experts question the plan: “All of the numbers are perfectly reasonable, but all are at the optimistic end of the scale of reasonable. Together in combination, the overall outcome is unreasonable. So the Barnes must either raise more than $150 million up front, or scale back its plans. That would require some tough, tough choices.”