Today marks the day I first walked out on a lecture, not because I need to do something of transcendental importance but simply because I couldn't take it anymore.. Thirty minutes of overtime is forgivable, even welcome at times, one hour of overtime is already bordering on the insensitive. One and a half hour marks the ticking point* where tolerance turns to hostility. Two hours marks the second ticking point where expletives are thrown, tables and chairs are banged, and people start walking out. Two and a half hours is another ticking point where insensitivity turns to cruelty and becomes a violation of human rights. Beyond two and a half hours is the ticking point where hostility turns to serious thoughts of murder.