from research import *
s=begin(1138,'Locate the remaining source information in the grid family','Which single retained interior age, if any, identifies the printed sequence?',{},['C1137'])
d=json.loads((ROOT/'model/SP_early_grid_fibre.json').read_text());sol=d['solutions'];actual=d['source']
fibres={name:[v for v in sol if v[i]==actual[i]] for i,name in enumerate(['Seth','Enosh','Kenan'])}
a=artifact('model/SP_grid_single_measurements.json',json.dumps(fibres,indent=2)+'\n')
finish(s,{'single_age_fibres':a,'counts':{k:len(v) for k,v in fibres.items()}},'Holding a source age can narrow the diagnostic grid family, but this is identification under already selected order/grid conditions. It does not explain why that age or those conditions were transmitted.','Compare finite-grid identification with an unrestricted rational source-coordinate basis.',{'all_retain_source':all(actual in v for v in fibres.values()),'Enosh_unique':len(fibres['Enosh'])==1,'Kenan_nonunique':len(fibres['Kenan'])>1})