Professional Courtesy

Rather than adapting formerly 80 min. lectures into our 50 min. restraints, our professor instead holds us longer as the semester progresses and subject matter increases difficulty (thereby invalidating technique of "just speaking faster). I find, the more that I have to adapt my own research and presentations to various time/space restraints, that I have a harder time not being offended by this behavior.

I'm not sure what to comment as yet, because I am interested in the topic, and more importantly, have never had the opportunity to experience this myself as a teacher. I'm sure one's perspective is bound to change in that instance. However, currently, it just seems courteous as a professional to respect the students' time and keep to the time restrictions prescribed for a semester. The opposite if you don't.