The division of students into different classes according to their grades might cause some problems, such as hurting the pride of some students whose grades are not so good.
A reliance on the management of resources through cooperative action reduced their flexibility of action, so that when poor seasons occurred, people were seriously hurt.
To avoid hurting the thousands of crested ibises that fly near one part of the railway, protective nets have been set up along the tracks to make sure the birds will not fly into a train.
For example, employees had to prove that their injuries directly resulted from employer negligence and that they themselves were ignorant about potential hazards in the workplace.