It has caused me to expend time and energy for extra movements within my home or at the university. For example, I have taught in a classroom where the computer is in a structure in the corner of the front of the room. The table extended part of the way across the front of the room. I often lectured using PowerPoint. So I needed to keep walking back and forth from being close to the students to the mouse to be able to change the slide. I have now compensated for this problem by using a remote mouse. In addition, the screen covered the entire whiteboard, thus making it impossible to write on the board and have a slide or overhead projected on the screen at the same time.