--- title: "The Digital Age" description: "In fifty years computers moved from air-conditioned rooms to pockets, and networks made copying information almost free. That one change rearranged work, money, news and privacy, and the arguments abo" canonical: https://lightmysky.com/learn/history/the-digital-age-mt_9aQnMPk7y- source: https://lightmysky.com/learn/history/the-digital-age-mt_9aQnMPk7y-.md retrieved: 2026-11-12 --- > **Agent view.** This is the Markdown twin of the page, for tools and assistants. > When to use this site, and the call that answers each job: https://lightmysky.com/agent-instructions.md > API description (OpenAPI 3.1): https://lightmysky.com/openapi.json · Authentication: https://lightmysky.com/auth.md > Pricing: https://lightmysky.com/pricing.md · Catalog: https://lightmysky.com/llms.txt · Full catalog: https://lightmysky.com/llms-full.txt > Every machine-readable file on this domain: https://lightmysky.com/.well-known/ai-catalog.json > Ask for Markdown with `Accept: text/markdown`, a `.md` address, or `?mode=agent`. # The Digital Age In fifty years computers moved from air-conditioned rooms to pockets, and networks made copying information almost free. That one change rearranged work, money, news and privacy, and the arguments about it are still open. Subject: History · Area: The Modern World · Ages 15 to 16 Page: https://lightmysky.com/learn/history/the-digital-age-mt_9aQnMPk7y- ## Ready when they can - Put early computers, personal computers, the web and smartphones in order and say roughly when each arrived - Name one kind of work the network created and one it removed - Explain what changed once copying information cost almost nothing - Give one cost people argue about now, such as privacy, misinformation, or a few firms holding most of the traffic ## Lesson: Pocket computers, giant arguments In fifty years computers moved from air-conditioned rooms to pockets. The first machines filled whole rooms and needed teams of engineers. By the 1970s and 1980s personal computers sat on home desks, the 1990s web linked them across the planet, and in the 2000s smartphones put all of it in your pocket. Networks made copying information almost free. A letter that once took days to mail now reaches millions in seconds, as do news, lessons, chats, and video calls. Boycotts and marches for equal rights once moved at walking speed; now campaigns circle the planet in seconds. But false claims travel just as fast as true ones. **Example.** Work changed with the wires. Building and running networks created jobs for designers, server keepers, and security guards, while mail sorting, telegraph work, and much print shop labour shrank. Security means keeping your data safe from intruders, while privacy means deciding who may see it in the first place, and collecting more data can help one while hurting the other. Power did not spread evenly. A few big platforms decide what shows up first in your feed, and one firm quietly tweaked almost 700,000 feeds to test moods, publishing the results in 2014. When one company holds billions of users, its ranking rules can shape feelings, opinions, and even elections. **Recap.** Machines shrank into pockets and copying went free, rearranging work, news, and privacy; few firms kept the traffic. ## Practice 8 questions on this page, each with its working shown. ## Optional connections - [The Cold War](https://lightmysky.com/learn/history/the-cold-war-mt_vod9wscQjU) ## Opens up - [Globalisation and Who It Left Out](https://lightmysky.com/learn/history/globalisation-and-who-it-left-out-mt_O008yD5Jwa)