#trial_and_error__trialanderror  experimenting until a solution is found
  supertype:  experiment.scientific_research__experimentation  the act of conducting a controlled test or investigation
     supertype:  scientific_research__research_project  research into questions posed by scientific theories and hypotheses
        supertype:  research  systematic investigation to establish facts
           supertype:  investigating__investigation  the work of inquiring into something thoroughly and systematically
              supertype:  work  activity directed toward making or doing something; "she checked several points needing further work"
                 supertype:  activity  any specific activity or pursuit; "they avoided all recreational activity"
                    supertype:  human_action__humanaction__act__human_activity__humanactivity  something that people do or cause to happen
                       supertype:  process__proces  situation commonly considered as making a change during some period of time
                          supertype:  situation  something that "occurs" in a real/imaginary region of time and space
                             supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                          supertype:  process_or_process_description
                             supertype:  processing_thing
                                supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                                   supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                       supertype:  process__proces__physicalsituation  intuitively, the class of things that happen and have temporal parts or stages; examples include extended events like a football match or a race, actions like pursuing and reading, and biological processes; sumo#process is not identical to pm#situation because an instance of pm#situation is not necessarily an instance of sumo#physical
                          supertype:  situation  something that "occurs" in a real/imaginary region of time and space
                          supertype:  process_or_process_description
                          supertype:  physical__physical_thing  an entity that has a location in space-time; locations are themselves understood to have a location in space-time; click here for more details on the identical category sowa#physical_thing
                             supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

No statement uses or specializes trial_and_error; click here to add one.