A development economist proposes that a country with weak educational infrastructure can leapfrog this stage by distributing smartphones loaded with educational apps — following the same logic as mobile phones bypassing landlines. What is the most important problem with this argument?
ASmartphone educational apps have not been proven as effective as traditional classroom instruction
BEducational infrastructure is not a technology with a newer substitute — literacy and numeracy are foundational capabilities that digital tools build on rather than replace
CThe cost of distributing smartphones to all citizens would exceed the cost of building schools
DThere is insufficient broadband infrastructure in developing countries to run educational apps
Leapfrogging works when a newer technology is a direct substitute for an older infrastructure — the new version provides the same function without requiring the predecessor as a foundation. Mobile phones bypass landlines because the service (voice communication) is the same. But educational apps cannot bypass the need for literacy and numeracy: the apps themselves require reading, reasoning, and prior knowledge. You cannot skip the foundational capability by using a tool that depends on it. This is the critical limit of leapfrogging — it applies to technologies, not to skills or institutions.
AIt required users to first open a traditional bank account, then linking mobile transfers to existing infrastructure
BIt used a fundamentally different infrastructure (mobile networks rather than physical branches) to provide banking services without the predecessor system as a foundation
CThe Kenyan government nationalized the banking sector and subsidized universal mobile money access
DIt relied on pre-existing postal infrastructure to verify identities and record transactions
M-Pesa exemplifies leapfrogging: it did not build on top of physical bank branches — it bypassed them entirely using a different cost structure (mobile cell towers instead of branch buildings and staff). For the billions of 'unbanked' people in developing countries, this meant accessing savings, transfers, and credit without waiting decades for branch banking infrastructure to reach them. The key is that mobile money is a genuine substitute for the same financial functions, not an add-on requiring the older system.
Question 3 True / False
According to the leapfrogging framework, developing countries can skip the institution-building stage of development by using technology to enforce contracts digitally and coordinate economic activity online.
TTrue
FFalse
Answer: False
Institutions (contract enforcement, property rights, rule of law) cannot be leapfrogged because they are not technologies that get replaced by a newer version — they are foundational social and legal structures that technology depends on. Even digital contract enforcement requires a legal system to resolve disputes and a trustworthy state to back up enforcement. Technology is an accelerant that amplifies what good institutions make possible; it is not a substitute for building them.
Question 4 True / False
The fact that Sub-Saharan Africa achieved mobile phone penetration above 80% without first building landline networks is a genuine example of technological leapfrogging, because mobile networks use a fundamentally different and cheaper infrastructure than wired telephony.
TTrue
FFalse
Answer: True
This is the paradigmatic leapfrogging case. Wired telephone networks require cables to every home — prohibitively expensive across vast, low-density rural areas. Mobile networks require cell towers with a radically different cost structure. Countries that never deployed landlines at scale skipped that stage entirely and jumped straight to mobile, achieving better connectivity outcomes than a sequential build-out would have produced. The newer technology was a genuine substitute, not an add-on requiring the older system.
Question 5 Short Answer
What distinguishes technologies that can be leapfrogged from capabilities that cannot? Give the key principle and one example of each.
Think about your answer, then reveal below.
Model answer: A technology can be leapfrogged when the newer generation is a direct substitute providing the same function without requiring the older infrastructure as a foundation (e.g., mobile phones replace landlines — same voice communication function, different cost structure). A capability cannot be leapfrogged when the newer tool depends on the capability rather than replacing it (e.g., you cannot skip literacy by distributing e-books — the e-book requires the ability to read). The key test: does the new technology build on the old stage, or does it substitute for the same function from a different base?
This principle explains both the dramatic successes (mobile telephony, mobile money) and the limits of leapfrogging as a development strategy. When the prerequisite is physical infrastructure with a different-cost substitute, leapfrogging works. When the prerequisite is a foundational human or institutional capability that newer tools require rather than replace, there is no shortcut.