Y do ENGINEERING students always prefer local author books then REFERENCE books..?? The local author says; “Jack & Jill went up the hill to fetch a pail of water, jack fell down and broke his crown and Jill came tumbling after" & REFERENCE BOOK says; “ 2 humans ascended a certain geological protuberance to collect hydride of oxygen whose quantity is not specified. One member Jack of rapid irregular disturbing movements encounter fatal logical gravitational error leading to complete disarray. Other member whose scope lies within disarray descends down the geographical protuberance at an acceleration, whose magnitude is controlled by the force of gravity.