Going against the topic is not a healthy approach at all. When the examiner has already taken a stance that labor saving devices are more troublesome, then there is no need to go against the topic. If the topic were ' labor saving devices; blessing or curse?', then you would take a side and prove your stance. However, it's always safer to move with the tide. Dear, you have argued utterly against the examiner's opinion. It's very hard to convince him in such a way. Still i wish you a good luck.

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Success usually comes to those who are too busy to be looking for it.