New Delhi, Nov. 12 -- The word 'Engineer' by definition means the one who innovates to make people's lives easier. When it comes to innovation, it is often said that lazy people make good engineers. This may actually be true only to a certain extent. But when the matter is of achieving greatness, hard work, as an attribute, cannot be ignored.

Let's take a look at the greatest engineers of all times who gifted humanity with new innovations that made our lives easier. Note that, the names do not follow any order.

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