Dan Markovitz reveals a common problem that lean programs often face.    Boeing’s Starliner failed an important test flight two weeks ago. It was supposed to rendezvous with the International Space Station, but was unable to reach the correct orbit.   The problem with this engineering marvel? Not the complex aerodynamics, not the critical separation from the Atlas V rocket, not the all-important re-entry heat shield.  No, the problem was with the internal clock. The spacecraft’s internal clock became unsynced with…