Science & Tech: Inventions, Ethics, and Future Impact

TAKEAWAYS:

• Understand how scientific discoveries (e.g., vaccines, AI) solve problems but also raise ethical questions.
• Learn to compare old vs. new technologies (e.g., books vs. e-books) using structured arguments.
• Identify advantages/disadvantages of tech (e.g., social media’s pros/cons) with real-world examples.
• Practice writing essays on tech’s impact, using clear introductions, body paragraphs, and conclusions.
• Recognize NEB exam patterns: short answers, summaries, and essay prompts on tech-related topics.

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### **What is Science and Technology?**
Science is the **study of nature** to understand how things work (e.g., gravity, cells, computers). Technology is the **application** of that knowledge to create tools (e.g., smartphones, vaccines, robots).

**Example:**
- **Science:** Discovering how viruses spread.
- **Technology:** Creating a COVID-19 vaccine.

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### **Key Inventions and Their Impact**
#### **1. The Printing Press (1440, Johannes Gutenberg)**
- **How it works:** Used movable metal type to print books quickly.
- **Impact:**
  - Made books **cheaper and widely available**.
  - Spread **knowledge and literacy** (e.g., the Bible in local languages).
  - Led to the **Renaissance** (rebirth of art/science in Europe).

#### **2. The Internet (1960s–1990s)**
- **How it works:** A global network connecting computers via cables, satellites, and Wi-Fi.
- **Impact:**
  - **Pros:** Instant communication (email, social media), online education, e-commerce.
  - **Cons:** Cyberbullying, misinformation, privacy risks.

**Comparison Table:**
| Feature          | Printing Press       | Internet               |
|------------------|----------------------|------------------------|
| **Speed**        | Slow (hand-copied)   | Instant                |
| **Reach**        | Limited (Europe)     | Global                 |
| **Cost**         | Expensive (paper)    | Cheap (digital)        |
| **Ethical Issue**| Censorship of books  | Fake news, hacking     |

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### **Ethical Dilemmas in Technology**
Technology brings **both progress and problems**. Here are key ethical questions:

#### **1. Artificial Intelligence (AI)**
- **Example:** Self-driving cars.
- **Pros:**
  - Reduces accidents caused by human error.
  - Helps disabled people move independently.
- **Cons:**
  - Who is **responsible** if a car crashes?
  - Could AI replace human jobs (e.g., truck drivers)?

#### **2. Genetic Engineering (CRISPR)**
- **Example:** Editing genes to cure diseases.
- **Pros:**
  - Can eliminate hereditary diseases (e.g., sickle cell anemia).
  - May help create **disease-resistant crops**.
- **Cons:**
  - **"Designer babies"** (parents choosing traits like eye color).
  - Unintended **side effects** (e.g., weakening immunity).

**NEB-Style Short Answer Question:**
*"How has the internet changed education? Give two advantages and one disadvantage."*
**Answer:**
- **Advantages:**
  1. **Online courses** (e.g., Khan Academy) let students learn at home.
  2. **Research** is faster (Google Scholar, digital libraries).
- **Disadvantage:** **Distractions** (social media, games) reduce focus.

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### **Science and Technology in Nepal**
Nepal is using tech to solve local problems:
1. **Farmers:**
   - **App:** *Kisan Suvidha* (weather alerts, market prices).
   - **Impact:** Reduces crop losses from floods/droughts.
2. **Healthcare:**
   - **Telemedicine:** Doctors in Kathmandu advise rural clinics via video calls.
3. **Tourism:**
   - **Augmented Reality (AR):** Apps show hidden temples in Kathmandu.

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### **How to Write an Essay on Science and Technology**
NEB exams often ask for **essays (10–12 marks)**. Follow this structure:

#### **Step 1: Introduction**
- Start with a **hook** (surprising fact or question).
- Define the topic clearly.

**Example Hook:**
*"Imagine a world without smartphones—no Google Maps, no WhatsApp, no online classes. Science and technology have become as essential as air!"*

#### **Step 2: Body Paragraphs (2–3 points)**
Use the **PEE method**:
- **Point:** State your idea.
- **Evidence:** Give examples/facts.
- **Explanation:** Link it back to the topic.

**Example Paragraph:**
> **Point:** The internet has revolutionized education.
> **Evidence:** In Nepal, students in remote areas like Dolpa now attend online schools like *Srijana Secondary School*.
> **Explanation:** Without the internet, these students would have no access to teachers or textbooks, widening the education gap.

#### **Step 3: Conclusion**
- Summarize key points.
- End with a **thought-provoking sentence**.

**Example Conclusion:**
*"While technology offers incredible opportunities, Nepal must ensure everyone benefits—from mountain villages to busy cities. The future of science and tech lies in responsible and inclusive innovation."*

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### **NEB Exam Tips for Unit 7**
1. **Short Answers (3–5 marks):**
   - Focus on **key points** (e.g., 2 pros and 1 con).
   - Use **examples** from the unit (e.g., printing press, AI).

2. **Summaries (5 marks):**
   - Read the passage **twice**: first for main ideas, second for details.
   - Write in **your own words** (avoid copying).

3. **Essays (10–12 marks):**
   - **Plan first:** Write points in bullet form before drafting.
   - **Use linking words** (*however, furthermore, for example*).
   - **Check time:** Spend 10 mins planning, 20 mins writing, 5 mins revising.

**NEB-Style Essay Question:**
*"Science and technology have changed our lives in many ways. Discuss how these changes have affected education and communication."*
**Answer Outline:**
1. **Introduction:** Tech’s role in modern life.
2. **Education:**
   - Pros: Online classes, digital libraries.
   - Cons: Screen time reduces reading books.
3. **Communication:**
   - Pros: Instant messaging (WhatsApp), video calls.
   - Cons: Less face-to-face interaction.
4. **Conclusion:** Balance tech’s benefits with ethical use.

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### **Practice Questions**
1. **Short Answer (3 marks):**
   *"What is CRISPR? Give one advantage and one disadvantage of genetic engineering."*

2. **Summary (5 marks):**
   Read the following paragraph and write a summary in 80 words:
   > *"The printing press, invented by Gutenberg, marked the beginning of mass communication. Before 1440, books were handwritten by monks, taking years to copy. The press made books affordable, leading to the spread of ideas during the Renaissance. However, it also allowed governments to censor information by controlling what was printed."*

3. **Essay (10 marks):**
   *"Mobile phones have become a necessity in modern life. Discuss the positive and negative effects of mobile phones on society."*

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![printing press machine](/media/5a1190387d7966c70cbd.png "A 15th-century printing press with movable metal type. (Image: Pearson Scott Foresman, Public domain, via Wikimedia Commons)")