The promised financial impact of the All Aboard Florida train is large: $6.4 billion infused into the state's economy by 2023, $2.4 billion in pay, benefits and taxes for labor through 2021 and 10,000 construction jobs each year through 2017.
But how real are those numbers, which are coming from a report commissioned by the Coral Gables-based train company?
Economic impact studies are "layer cakes of uncertainty," said Sean Snaith, an economist at the University of Central Florida who has authored a few of his own.