Thestudents,havinglearnedandpracticed,findthattheirknowledgeislacking.Theteachers,throughpractice,findthattheirabilitiesarealsolacking.Becausethestudentshavefoundtheirweaknesses,theyareabletoexaminethemselvesandworkhardertoimprovetheirstudies.Theteachershavinglearnttheirlimitations,willworkhardertoimprovetheirteachingskills.