These days I am ill, and had to spend most of my time at home. Besides of resting in the bed, sometimes I would like to walk around in the living room and the kitchen and one day I think of something interesting.

Most of us are living with other students or friends, in other word, roommates. Similarly to our society, some rules need to be settled in order to maintain the efficiency as well as equity. Therefore, I think the sustainability concept also exists in micro-scale — home.

For instance, in our kitchen, there is a dishwasher to use, and for convenience, one of my roommate would like to use it rather than washing the dishes himself. Also, in order to lower the water consumption, it is more economical to turn it on when it is fully-loaded with dishes. However, before each operation, those unclean dishes are mostly placed in the sink or left on the table, which makes the kitchen so messy. One other problem is that there might be a situation that there are only dirty plates left when one wants to use a clean one.

On the other hand, if one could clean the dishes immediately after the meal, it would be easier to clean them than those which have been staying in the sink for days, also for certain bowl or plate that there is only one in the kitchen, cleaning directly would ensure that those would be available for the next person who wants to use, and also the kitchen would not be so messy. No matter what, one should clean the dishes anyways, so why not cleaning them right away?

Similarly, in our society, issue like pollution is also a kind of problem that would grow larger if it has been accumulating for a long time. Therefore it would be more difficult if the problem is ignored for a long time and be solved later.