I may have taken the headache example a little too literally.
People of the teaching profession find chalk to be
messy and cause students to sneeze, while on the other hand, people of the
technological field thought it was a great way for teachers to share
information with the entire class. The only downside they saw is that the
teacher would have to erase it for more room. From a health perspective, chalk
causes the most harm to the teacher because of their proximity to the board.
They believe it could also affect students with allergies to chalk and make it
difficult for them to breath.
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