How Impacts Shape What Comes Next: Emerging Technologies

1. A technology is used widely. 2. Its positive and negative impacts appear. 3. Society responds (choices, laws, research, public pressure). 4. The technology is improved, replaced or limited.

It phased out ozone-depleting chemicals such as CFCs worldwide (signed in 1987).

LED bulbs use much less electricity and last much longer, so people and governments adopted them quickly. (Other examples: smartphones, vaccines.)

A new or fast-developing technology whose impacts are not fully known. Examples: AI, self-driving cars, 3D printing, delivery drones, advanced batteries.

Early on, a technology is easy to change but its impacts are hard to predict; later, impacts are clear but it is hard to change.

CFLs saved energy but contain mercury and need special disposal; LEDs are even more efficient, last longer and contain no mercury.

The ozone layer.

1990.

Examples: airbags, electronic stability control, automatic emergency braking.

Plus (positive impacts).

Yes, it is still developing quickly, especially for new uses like building parts and houses.

HFCs replaced CFCs because they do not harm the ozone layer, but they turned out to be strong greenhouse gases. The Kigali Amendment (2016) started phasing them down, so engineers are moving to newer refrigerants. This shows the feedback loop running more than once.

Users' choices (people buying reusable bags), laws (efficiency standards for bulbs), research and redesign (airbags), public pressure (campaigns against single-use plastics). Accept other matching examples.

Fewer products, factories, users and systems depend on it, so changes in design or rules affect fewer people and cost less. Once it is everywhere, changing it means replacing many products and habits.

Example: cheap air travel let many more people visit family and travel (positive), which greatly increased greenhouse gas emissions from planes (negative), which is now pushing research into more efficient aircraft and new fuels.

Rule: limit flight times and routes to reduce noise and protect privacy (no cameras recording people). Design: quieter propellers or packages lowered on a line so the drone stays high. (Other reasonable answers accepted.)

Sample (self-driving cars): benefits: possibly fewer crashes caused by human error, mobility for people who cannot drive; harms: crashes in unusual conditions (snow, construction), job losses for drivers, data privacy, who is responsible in a crash; certainty: limited evidence in Canadian winter conditions; reduce harms: testing in snow, safety standards, clear liability laws; reversibility: hard once cities redesign roads and transit around them. Verdict (sample): adopt gradually with strict rules and more testing. Any well-justified verdict is acceptable.

The ozone layer is shared by the whole planet; CFCs released anywhere damage it everywhere. One country acting alone could not fix the problem, and companies might move production to countries without rules. The Montreal Protocol worked because nearly every country agreed to the same phase-out, which also gave manufacturers a clear reason to redesign products.

Sample: injuries and sidewalk clutter could lead to rules for parking zones, speed limits and helmets, and to designs with bigger wheels, better brakes and lights. Positive impacts (fewer short car trips) could lead the town to build more bike and scooter lanes, encouraging more use. Look for impacts leading to specific design or rule changes.