The CTA has become a scarier place.
Robbery has soared 77 percent on CTA trains, platforms and buses in the past three years, from 246 incidents in 2006 to 436 in 2008, according to the Chicago Police Department.
Theft -- when no force is involved -- is up 6 percent, from 1,173 reported crimes in 2006 to 1,238 in 2008.
Crime is up. Arrests are up. That makes sense, too - more chances to grab an offender.
So what's left to explain the rise? Manpower shortages? If one team is in on an arrest, that leaves larger swaths of the tunnels and platforms uncovered. That's one explanation. Who has the CTA manpower numbers from year-to-year to make the argument?