Facts: zero flaps/slats take off attempt. Cnfig Warning did not work. Question: can FDR determine if the flap/slat lever was moved out of the "up" position? In other words has the possibility been ruled out already that the crew in fact could have set the flaps/slats correctly but that the flaps failed to operate followed by forgetting to check the FPI. In our company (I fly Avro) it is customary to check the correct setting by calling: FLAPS (NUMBER) (points to T/O datacard), SET (points to flap lever position) AND CHECKED (points to FPI).