No one will doubt the importance of the efficiency of the task , because the reason of that efficiency is to challenge oneself. Efficiency will help you to find the most useful way to adapt to different kinds of work.However, different pepple have different views when it comes to the question whether should workers have many different tasks to do during the whole day or do similar tasks to spend the workday. Some people think that people should do the different kinds of work all the day to, but I think different types of tasks it is  better for workers.

 Obviously, the majority of people are forced to repeat their action that like a machine, because they cannot endure the boring same work. Trying to do different types of tasks is beneficial for them to keep the motivation of job and is easy to satisfy themselves with achieving success in varied domains.
 
　　The different types of tasks would make it impossible for workers to be happy sometimes: they force these people to face new challenges and it costs more time to acquaint every kind of tasks which even would be changed definitely in the second day. Except few extremely bold people, a huge number of workers will feel quite stressful when something is completely new for them.
 Further, the same type of task doesn’t mean the context of the job is the same. People are likely to suffer from varied kinds of formidableness in the daily work. An architect should do several different plans for one project. Even though they draw a window for one building’s façade, they have to establish dozens of models of windows to match the whole genre. Besides, if their work does not fulfill their customers’ demands, the architects have no choice but to redraw the façade. This type of work on some stage can also be called working repeatedly, whereas the context is definitely different and filled with challenges. It affords the strong happiness when the clients acclaim the work at last. So, I believe that no one will affirm that being an architect is a boring position even though they only do design every day.
　　
 
　　In the end, we have to clarify which reasons lead workers to be happy. How different the type of tasks is unlikely to simply determine how happy workers can be during their workday. If one type of task containing diverse challenges stimulates someone’s motivation, the people would attain likewise pleasure from the work.