Anytime a lesson plan goes wrong, there exists the possibility of a challenge to your authority as instructor, and technology definitely offers the opportunity for lesson plans to go wrong. However, there are ways around technological betrayal, and you can develop strategies for dealing with the unexpected and keeping authority in tact. Some TA's have reported the technology failure/loss of authority problem to be an unpleasant surprise, usually because it is unexpected. Knowing the technology can fail and being prepared to deal with that contingency are probably the best ways to avoid being caught off guard and potentially embarrassed. Also, TA's in the past have commented on how helpful the support staff are in quickly addressing technology problems. For more about what to do when technology fails, see What do I do when the computers don't work? under Training Teachers for the Computer Classroom.