 Dadka jira 50 ilaa 70 oo lagula taliyay inay shaqada u fiican tahay Prof Richard Layard, oo wax ka qoray warbixinta ayaa sheegay in waxa lagu helay daraasaadka ay u baahan tahay dowladda inay qayb cusub ka qaadato farxada bulshada , iyadoo xooga saaraysa inay samayso Waxa farxada u keena bulshada halka ay ka samayso Waxa lacagta u keena. 