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Insurance

Insurance is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Insurance rather than just read about it. In short: Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury. It is a form of risk management, primarily used to protect against the risk of a contingent or uncertain loss.

Insurance — main illustration
Insurance — illustration

Key takeaways

  • Insurance belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Insurance to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Insurance from memory before moving on to harder problems.

Reference excerpt

Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury. It is a form of risk management, primarily used to protect against the risk of a contingent or uncertain loss. An entity which provides insurance is known as an insurer, insurance company, insurance carrier, or underwriter. A person or entity who buys insurance is known as a policyholder, while a person or entity covered under the policy is called an insured. The insurance transaction involves the policyholder assuming a guaranteed, known, and relatively small loss in the form of a payment to the insurer (a premium) in exchange for the insurer's promise to compensate the insured in the event of a covered loss. The loss may or may not be financial, but it must always be reducible to financial terms. Furthermore, it usually involves something in which the insured has an insurable interest established by ownership, possession, or pre-existing relationship. The insured receives a contract, called the insurance policy, which details the conditions and circumstances under which the insurer will compensate the insured, or their designated beneficiary or assignee. The amount of money charged by the insurer to the policyholder for the coverage set forth in the insurance policy is called the premium. If the insured experiences a loss which is potentially covered by the insurance policy, the insured submits a claim to the insurer for processing by a claims adjuster. A mandatory out-of-pocket expense required by an insurance policy before an insurer will pay a claim is called a deductible or excess (or if required by a health insurance policy, a copayment). The insurer may mitigate its own risk by taking out reinsurance, whereby another insurance company agrees to carry some of the risks, especially if the primary insurer deems the risk too large for it to carry.

History

Early methods

Methods for transferring or distributing risk were practiced by Chinese and Indian traders as long ago as the 3rd and 2nd millennia BC, respectively. Chinese merchants travelling treacherous river rapids would redistribute their wares across many vessels to limit the loss due to any single vessel capsizing. Codex Hammurabi Law 238 (c. 1755–1750 BC) stipulated that a sea captain, ship-manager, or ship charterer who saved a ship from total loss was only required to pay one-half the value of the ship to the ship-owner. In the Digesta seu Pandectae (533), the second volume of the codification of laws ordered by Justinian I (527–565), a legal opinion written by the Roman jurist Paulus in 235 AD was included about the Lex Rhodia ("Rhodian law"). It articulates the general average principle of marine insurance established on the island of Rhodes in approximately 1000 to 800 BC, plausibly by the Phoenicians during the proposed Dorian invasion and emergence of the purported Sea Peoples during the Greek Dark Ages (c. 1100–c. 750). The law of general average is the fundamental principle that underlies all insurance. In 1816, an archeological excavation in Minya, Egypt produced a Nerva–Antonine dynasty-era tablet from the ruins of the Temple of Antinous in Antinoöpolis, Aegyptus. The tablet prescribed the rules and membership dues of a burial society collegium established in Lanuvium, Italia in approximately 133 AD during the reign of Hadrian (117–138) of the Roman Empire. In 1851 AD, future U.S. Supreme Court Associate Justice Joseph P. Bradley (1870–1892 AD), once employed as an actuary for the Mutual Benefit Life Insurance Company, submitted an article to the Journal of the Institute of Actuaries. His article detailed an historical account of a Severan dynasty-era life table compiled by the Roman jurist Ulpian in approximately 220 AD that was also included in the Digesta. Concepts of insurance have also been found in 3rd century BC Hindu scriptures such as Dharmasastra, Arthashastra and Manusmriti. The ancient Greeks had marine loans. Money was advanced on a ship or cargo, to be repaid with large interest if the voyage prospers. However, the money would not be repaid at all if the ship were lost, thus making the rate of interest high enough to pay for not only for the use of the capital but also for the risk of losing it (fully described by Demosthenes). Loans of this character have ever since been common in maritime lands under the name of bottomry and respondentia bonds. The direct insurance of sea-risks for a premium paid independently of loans began in Belgium about 1300 AD. Separate insurance contracts (i.e., insurance policies not bundled with loans or other kinds of contracts) were invented in Genoa in the 14th century, as were insurance pools backed by pledges of landed estates. The first known insurance contract dates from Genoa in 1347. In the next century, maritime insurance developed widely, and premiums were varied with risks. These new insurance contracts allowed insurance to be separated from investment, a separation of roles that first proved useful in marine insurance. The earliest known policy of life insurance was made in the Royal Exchange, London, on 18 June 1583, for £383, 6s. 8d. for twelve months on the life of William Gibbons.

Modern methods Insurance became far more sophisticated in Enlightenment-era Europe, where specialized varieties developed.

… excerpt ends here. Continue reading the full article.

Illustrations

Insurance: An advertisement for a fire insurance company Norwich Union, showing the amount of assets in coverage and paid insurance (1910)
An advertisement for a fire insurance company Norwich Union, showing the amount of assets in coverage and paid insurance (1910)
Insurance illustration
Insurance: Merchants have sought methods to minimize risks since early times. Pictured, Governors of the Wine Merchant's Guild by Ferdinand Bol, c. 1680.
Merchants have sought methods to minimize risks since early times. Pictured, Governors of the Wine Merchant's Guild by Ferdinand Bol, c. 1680.
Insurance: Lloyd's Coffee House was the first organized market for marine insurance.
Lloyd's Coffee House was the first organized market for marine insurance.
Insurance: Leaflet promoting the National Insurance Act 1911
Leaflet promoting the National Insurance Act 1911

Worked examples

Example 1 — a first encounter with Insurance

Start with the simplest possible case. Write down what Insurance claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Insurance before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Insurance ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Insurance

In research
Insurance appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Insurance in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Insurance is common in secondary-school and first-year university syllabi. It links to neighbouring topics Financial services, Insurance, Tertiary sector, so understanding it makes those chapters shorter.
In everyday life
Look for Insurance outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Insurance in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Insurance means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Insurance out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Insurance in simple terms?

Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury. It is a form of risk management, primarily used to protect against the risk of a contingent or uncertain loss.

Why does Insurance matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Insurance?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Insurance.

Tags

  • Financial services
  • Insurance
  • Tertiary sector

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