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IvanSanchez
  • Member for 5 years, 8 months
  • Last seen more than a month ago
49 votes

How can you build cities without cement?

11 votes

In a world with a single operating system, how can we avoid user tracking?

10 votes

How Does Orbital Warfare Work?

7 votes

Living on an Isolated Peninsula - Making it Impossible to Leave

6 votes

What might stop people from destroying navigation satellites that are used for FTL plotting?

4 votes

Would it be possible to detect traces of a civilisation after a world-shattering collision?

4 votes

How quickly could a country build a tall concrete wall around a city?

3 votes

Could an accidental fire in a modern city without another disaster at the same time burn down the entire city?

3 votes

What kind of world would drive brains to evolve high-throughput sensory?

2 votes

Skysteading: How to build a flying city

2 votes

What do fairies wear and how can they evade detection by our cameras?

2 votes

What could cause a culture to change their writing style?

2 votes

Living on a giant banana world

2 votes

The 10,000 year skyscraper

1 vote

Best place on Earth to fake being on a distant planet?

0 votes

Do you need a new brain to see new colors?