Harvard Business Comment Report: Hoo e ka bang lihora tse limilione tse 4 ka letsatsi UK li sebelisoa kopanong ea sehlopha, United States, ka karolelano liboka tsa sehlopha sa 1,100 ka letsatsi, tseo e 'ngoe le e 'ngoe ea tsona e leng lihora tse 3.5 ka letsatsi, eseng hora e le 'ngoe.