21．For every course that he follows a student is given a grade, which is recorded, and the record is available for the student to show to prospective employers.
20．At the early attempts, the cable failed and when it was taken out for repairs it was found to be covered in living growths, a fact which defied contemporary scientific opinion that there was no life in the deeper parts of the sea.
19．The first time that the question “ What is at the bottom of the oceans?” had to be answered with any commercial consequence was when the laying of a telegraph cable from Europe to America was proposed.
18．For most people the sea was remote, and with the exception of early intercontinental travellers or others who earned a living from the sea, there was little reason to ask many questions about it , let alone to ask what lay beneath the surface.
17．Certainly Newton considered some theoretical aspects of it in his writings, but he was reluctant to go to sea to further his work.
16．Obviously, there would be no point in investing in a computer if you had to check all its answers, but people should also rely on their own internal computers and check the machine when they have the feeling that something has gone wrong.
15．Already today, less than forty years later, as computers are relieving us of more and more of the routine tasks in business and in our personal lives. We are faced with a less dramatic but also less foreseen problem.
14．In what now seems like the prehistoric times of computer history, the earth’s postwar era, there was quite a wide-spread concern that computers would take over the world from man one day.
13．We are, however, not the less obliged by your kind offer, though we refuse to accept it; and, to show our grateful sense of it, if the gentlemen of Virginia will send us a dozen of their sons, we will take care of their education, teach them in all we know , and make men of them.
12．But you must know that different nations have different ways of looking at things, and you will therefore not be offended if our ideas of this kind of education happen not to be the same as yours.