After take-off, there follows a long interval of sustained growth known as the stage of drive to maturity. Rostow defines it "as the period when a society has effectively applied the range of modern technology to the bulk of its resources."   Now regularly growing economy drives to extend modern technology over the whole front of its economic activity. Some 10-20% of the national income is steadily invested, permitting output regularly to outstrip the increase in population. The make-up of the economy changes unceasingly as technique improves, new industries accelerate, older industries level off. The economy finds its place in the international economy: goods formerly imported are produced at home; new import requirements develop, and new export commodities to match them. The leading sectors will in an economy be determined by the nature of resource endowments and not only by technology.
The above examples of comparison help us realize that in general, writers utilize different kinds of comparisons to link an unfamiliar or a new idea to common and familiar objects. It facilitates readers to comprehend a new idea, which may have been difficult for them to understand otherwise. The understanding of a new idea turns out to be simpler when viewed with a comparison to something that is familiar to them. In addition, by making use of various literary tools for comparison, writers increase their chance of catching the attention and interest of their readers, as comparisons help them identify what they are reading to their lives.