Anna raised her hand. "Well, professor, if you rush, you increase your chances of accidentally doing the wrong thing or making a mess of the right thing. When that happens, you've probably ruined the materials and/or resources that come from the plant. It can be quite costly - moneywise, timewise, and resource-wise - to replace these materials. You've lost time and valuable materials, in this case, by rushing. It would make it a lot easier on yourself and others involved to just do the job correctly in the first place," she said.