The squad were having “visual training”． One smart recruit was asked by the officer to count how many men composed a digging party in a distant field．The party was so faraway that the men appeared as mere dots， but unhesitatinglythe recruit replied： “Sixteen men and a sergeant，sir．” “Right；but how do you know there's a sergeant there？” “He's not doing any digging,sir．”

班里正在進(jìn)行“視力訓(xùn)練”。一個(gè)聰明伶俐的新兵被班長(zhǎng)叫出來數(shù)遠(yuǎn)處曠野上采掘隊(duì)的人數(shù)。采掘隊(duì)在很遠(yuǎn)的地方，那些人看起來只是一些小點(diǎn)兒。但是這個(gè)新兵毫不猶豫地回答。 “十六個(gè)兵外加一個(gè)中士，長(zhǎng)官?！?“正確，可是你怎么知道那兒有一個(gè)中士？” “他不干活，長(zhǎng)官。”