--- title: "Labor-based technology and irreversibility" subject: "Technology, Environment and Society" chapter: 1 key: "semester_7/technology_environment_and_society:labor-based-tech-irreversible" source: https://www.bctengineer.com/q/semester_7/technology_environment_and_society/labor-based-tech-irreversible site: BCT Engineering --- # Labor-based technology and irreversibility Technology, Environment and Society · Chapter 1: Technology - Asked in: 2082 Baisakh, 3+5 marks - Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14 - Page: https://www.bctengineer.com/q/semester_7/technology_environment_and_society/labor-based-tech-irreversible - Whole chapter: https://www.bctengineer.com/md/semester_7/technology_environment_and_society/chapter-1 ## Question Define labor based and labor-intensive technology. Justify with examples that the "Technology is Irreversible". ## Short answer Labour-intensive technology uses large human labour with little machinery, while labour-based technology uses labour as the main resource supported by light equipment. Technology is irreversible because society cannot return to old ways once dependent on it, as seen with electricity, mobile phones and nuclear knowledge. Therefore impacts must be assessed before adoption. ## Answer #### Labour-based and labour-intensive technology - **Labour-intensive technology:** a production method that uses a large amount of human labour relative to capital and machines. Labour is the dominant input; machines are hardly used. Example: digging canals entirely by hand. - **Labour-based technology:** a method that uses **labour as the main resource**, supported by light equipment only where labour alone cannot achieve the required quality or is uneconomic (e.g. using a roller for compaction), while keeping quality and cost comparable to machine-based methods. Example: rural roads and trails in Nepal built by local workers under the LEP approach. Both are suitable for countries like Nepal where labour is plentiful and capital scarce. #### Technology is irreversible Once a technology is invented and accepted, society cannot return to the old way of life, even if the technology has harmful effects. It can only be improved, regulated or replaced by a newer technology. Reasons: dependence, convenience and efficiency, disappearance of old skills and tools, and knowledge that cannot be erased. **Examples:** 1. **Electricity:** After electric lighting, nobody chooses kerosene lamps; the economy runs on electricity. 2. **Mobile phone and internet:** Banking, education, business and social life depend on them; returning to letters and telegrams is impossible. Even the dangers (cyber crime, addiction) are handled by regulation, not by abandoning the internet. 3. **Nuclear technology:** After 1945 the knowledge of atomic bombs could not be erased; the world can only limit it through treaties (e.g. the Non-Proliferation Treaty). 4. **Motor vehicles and fossil fuels:** Despite pollution and climate change, society cannot go back to animal carts; it shifts to electric vehicles instead. 5. **Plastics:** Plastic causes pollution but is now built into packaging and products; the solution is recycling and bans on specific items, not total removal. 6. **Chemical fertilisers and pesticides:** Farmers who adopt them find it difficult to return fully to traditional farming because yields drop. 7. **Computers in offices:** Typewriters and manual ledgers have disappeared. Because technology is irreversible, its social and environmental effects should be studied **before** adoption through impact assessment and careful policy. ## Check yourself The answer's key points as multiple-choice questions, with the correct option and why. 1. Labour-intensive technology is best described as: A. Using mostly machines with few workers B. Using a large amount of human labour relative to capital and machines C. Using labour only for supervision D. Using light equipment for all quality work Answer: B. Labour is the dominant input and machines are hardly used. (Key point: Labour-intensive definition) 2. What distinguishes labour-based technology from purely labour-intensive technology? A. It uses no labour B. It uses labour as main resource but adds light equipment (e.g. roller) where labour alone cannot give quality C. It uses heavy machines mainly D. It is used only in cities Answer: B. Labour-based keeps labour as main resource, supported by light equipment while keeping quality and cost comparable. (Key point: Labour-based vs labour-intensive) 3. 'Technology is irreversible' means: A. Technology can never be improved B. Once accepted, society cannot return to the old way even if harmful; it can only be improved, regulated or replaced C. Harmful technology is automatically banned D. Technology always disappears after some time Answer: B. Society cannot go back; it manages harm through regulation or newer technology. (Key point: Meaning of irreversibility) 4. How does the answer say the world handles the irreversible knowledge of atomic bombs? A. By erasing the knowledge B. By limiting it through treaties such as the Non-Proliferation Treaty C. By returning to old weapons D. By ignoring it Answer: B. Knowledge cannot be erased, so it is controlled through treaties. (Key point: Irreversibility example) ## Related in Technology, Environment and Society - [Appropriate, intermediate and labor-based technology for LDCs](https://www.bctengineer.com/question.md?key=semester_7%2Ftechnology_environment_and_society%3Aappropriate-intermediate-labor-ldc) — Technology, Environment and Society, chapter 1, asked 2× - [Short note: Technology is irreversible](https://www.bctengineer.com/question.md?key=semester_7%2Ftechnology_environment_and_society%3Atechnology-is-irreversible) — Technology, Environment and Society, chapter 1, asked 2× - [Participatory approach, appropriate and labour intensive technology](https://www.bctengineer.com/question.md?key=semester_7%2Ftechnology_environment_and_society%3Aparticipatory-appropriate-labour) — Technology, Environment and Society, chapter 1