This document discusses teaching from several perspectives. It defines teaching as an intimate contact between individuals where a more mature person intends to effect changes in a less mature person. Teaching is characterized as a process of development and learning through face-to-face interaction. There are different types of teaching methods including lecture-based, technology-based, individual-based, and game-based. The document distinguishes between instruction and conditioning, noting that instruction aims to produce copies while conditioning modifies behavior. It also contrasts training, which helps learn new skills in a practical way and shapes habits, with indoctrination, which aims to influence people to believe certain facts without encouraging other beliefs.