Back to topics

Why can an invention help people who never paid for it?

An invention can benefit people who never bought it and firms that never funded its development. Those spillovers help explain why the return to an inventor can differ from the value of an idea to society.

3–5 min

Questions you could explore

  • When does sharing knowledge help innovation, and when might it weaken the incentive to invest?

Start reading

  • OpenStax13.1 Investments in Innovation

    Introduces the difference between private returns and benefits that spill over to others. The economic distinction does not establish an inventor’s personal motives.

Ready to try your ideas aloud?

Your topic carries over. Record up to 2½ minutes, depending on your plan.

Economics and money

Why can Ireland’s inflation rate differ from your shopping bill?

A national price index combines many purchases that no single household makes in exactly the same proportions. Ireland's Consumer Price Index uses spending weights, so changes in different prices contribute unequally to the overall figure.

4–5 min

Why can Ireland’s inflation rate differ from your shopping bill?

Economics and money4–5 minA national price index combines many purchases that no single household makes in exactly the same proportions. Ireland's Consumer Price Index uses spending weights, so changes in different prices contribute unequally to the overall figure.

Economics and money

What does a free afternoon still cost you?

An hour can be free of charges and still be scarce. Choosing one use means giving up the best available alternative, which is the opportunity cost even when no money changes hands.

3–5 min

What does a free afternoon still cost you?

Economics and money3–5 minAn hour can be free of charges and still be scarce. Choosing one use means giving up the best available alternative, which is the opportunity cost even when no money changes hands.

Economics and money

How can insurance spread financial risk across a group?

An uncertain large loss for one person can become part of a wider pool of risks. Insurance connects that pooling with a contract and a premium, while the contract still determines which losses are covered.

3–7 min

How can insurance spread financial risk across a group?

Economics and money3–7 minAn uncertain large loss for one person can become part of a wider pool of risks. Insurance connects that pooling with a contract and a premium, while the contract still determines which losses are covered.

Why can an invention help people who never paid for it? | Speech Topic | speaking.app