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Difficulty: MediumParagraph-Level Transitions

The following paragraphs are from an essay about Douglas Engelbart's 1968 computer demonstration. For the sake of the logic and coherence of the essay, in what order should the paragraphs be arranged?

  1. 1In 1968, a research demonstration in San Francisco fundamentally changed how humans interacted with machines. At the time, computers were room-sized mainframes operated by punch cards or text-only terminals, rendering them largely inaccessible to the general public.
  2. 2To bridge this gap, engineer Douglas Engelbart and his team at the Stanford Research Institute designed a simple wooden device with two metal wheels. Moving this device across a desk mapped directly to the movement of a cursor on a screen, allowing users to navigate menus instead of typing complex code.
  3. 3This wooden 'mouse'—so named because the cord resembled a tail—was officially unveiled during what is now known as 'The Mother of All Demos.' In a ninety-minute live presentation, Engelbart demonstrated not only the mouse but also early versions of word processing, video conferencing, and hypertext.
  4. 4Today, these technologies are so ubiquitous that they are taken for granted, but in 1968, they represented a radical shift toward personal computing. By showing that computers could be interactive tools for individuals rather than just calculation engines for corporations, the demonstration paved the way for the modern digital landscape.

Answer

The correct order begins with the paragraph introducing the 1968 demonstration and the accessibility problem, followed by the design of the wooden device, then the unveiling of the device at the live presentation, and concludes with the paragraph highlighting the modern legacy of these technologies.
The correct order establishes a logical progression: the first paragraph sets the historical context of room-sized mainframes and inaccessibility. The second paragraph introduces the wooden device to address 'this gap' (referring to inaccessibility). The third paragraph details the public unveiling of 'This wooden "mouse"' (referring to the wooden device). The fourth paragraph concludes by analyzing the modern impact of 'these technologies' (referring to the mouse, word processing, video conferencing, and hypertext).

Step-by-Step Solution

1
Identify the introductory paragraph.
The paragraph starting 'In 1968, a research demonstration...' is identified as the introduction.
It sets the historical backdrop and establishes the baseline problem of computer inaccessibility without relying on any transitional words or previous references.
2
Use transitional markers to locate the second paragraph.
The paragraph starting 'To bridge this gap...' is placed second.
The phrase 'this gap' refers directly to the 'inaccessible to the general public' problem mentioned at the end of the introductory paragraph.
3
Connect the physical device description to its public introduction.
The paragraph starting 'This wooden "mouse"...' is placed third.
The demonstrative phrase 'This wooden "mouse"' refers back to the 'simple wooden device' introduced in the second paragraph, maintaining logical and lexical cohesion.
4
Find the concluding paragraph that summarizes the overall impact.
The paragraph starting 'Today, these technologies...' is placed last.
The phrase 'these technologies' refers to the group of tools (mouse, word processing, video conferencing, hypertext) introduced in the third paragraph, and the paragraph shifts the focus to their modern-day legacy.

Key Concept

Paragraph-Level Transitions and Cohesion
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Topics

Paragraph-Level Transitions

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