At present,some people think ….while others claim …Both side

At present,some people think it's beneficial to do part time jobs in spare time,while others claim that without knowledge and experience,it's a waste of time to do such part time jobs as waitors.Both sides have their merits.
再问： 请问"waitors"是什么意思呀？
再答： 不好意思，打错了一个字母，服务生 waiter