We believe that one must balance the time, the individual, the quality, and the cost factors to achieve the desired target of trained individuals as set by the institution. If there are 30 participants and they all take only two minutes for questions, it would total 60 minutes of extra time. If, instead, in those 60 minutes these 30 participants elaborate the subject in pairs, the active time individually for each participant is increased by 15 times from two to 30 minutes.

After 12 lectures, with the help of pairs working in rotation, each of the 30 participants has reproduced the learning matter in his own words and at his own pace for six hours compared with 20 minutes in total if the participants had spoken and questioned the lecturer one after another.