“At Toyota, OJD [On the Job Development] is arguably the most important responsibility of all managers and Toyota has developed a systematic approach. Toyota uses the term ‘development’ because it is broader than what we often think of as training. Training is what you do so the worker can perform the job and meet the numbers. Development is growing the team member so they become increasingly capable at doing the job, at critiquing how to do the job, at improving how the job is done, and eventually at training others.” 

Toyota Culture  by Jeffrey Liker & Michael Hoseus (McGraw Hill, 2008) pp. 117-118