Welcome to English Corner
This is part of the English-language corner of the website - a space with different formats of English-language economics content: terms and articles, vocabulary trainers, tests, and materials for the international ("межнар") track. Below is one example of such a task, in the "качественная задача" (case/open-question) format used in international olympiads.
About this business task
This task is adapted from the International Economics Olympiad (IEO) 2026, Economics and Finance Open Questions section. The IEO is the world's largest annual economics and finance competition for high school students, held in a different host country each year, and one of the recognized international ("межнар") tracks that students who succeed at the All-Russian Olympiad in Economics can go on to compete in.
This particular question tests whether you can apply core location-theory and externality concepts to an unusual, real-world-flavored scenario - deciding whether to build an AI computing facility on Earth or in orbit. It combines conceptual reasoning (parts a, c, d) with straightforward quantitative comparison (part b), which is typical of the IEO's Open Question format: you're expected to explain your economic logic, not just produce a number.
Work through each part in order. Try to write a full argument before checking the solution - many points in the real marking scheme are awarded for reasoning, not just the final answer.
Open Question 1. Mortgage Securitization: Innovation or Instability?
Securitization is the process of converting various types of assets into tradable securities. The most common method involves pooling large assets together and issuing a larger number of small securities linked to this pool.
Financial innovation, and particularly securitization, are often cited as key drivers behind the U.S. housing boom of the early 2000s and the subsequent financial crisis. By the end of 2022, the U.S. securitization market exceeded $12.5 trillion, which is about half of the U.S. GDP.
In this question, you'll explore the advantages and disadvantages of securitization and its impact on the housing and mortgage markets. Consider a simple example. A bank issues 100 mortgage loans, each worth $1 million. The bank then creates 10,000 securities, each promising investors a 1/10,000th share of the total payments from the pool.