science

The Invisible Bankers

The Invisible Bankers 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 The Invisible Bankers rather than just read about it. In short: Invisible Bankers: Everything the Insurance Industry Never Wanted You to Know is a 1982 book on the insurance industry. It was written by the financial journalist Andrew Tobias who became famous for his earlier book The Only Investment Guide You'll Ever Need.

Key takeaways

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

Reference excerpt

Invisible Bankers: Everything the Insurance Industry Never Wanted You to Know is a 1982 book on the insurance industry. It was written by the financial journalist Andrew Tobias who became famous for his earlier book The Only Investment Guide You'll Ever Need. It covers the financial details of life, auto, health and fire insurance—the types consumers normally buy. Because insurers are frequently the victims of insurance fraud, insurance companies need to be on their guard. On the other hand, an unscrupulous insurer could, in theory, increase its profits by either inducing their insured to settle for less than the amount to which they are entitled, or from outright denial of valid claims in the hopes that a small yet significant number of the insured would either give up in discouragement, or wrongly believe that their claims were invalid. This makes dealings with insurers difficult. This book was the first guide to ordinary consumers into both the math and the business side of insurance.

See also The Only Investment Guide You'll Ever Need The Bankers by Martin Mayer

External links New York Times review

Worked examples

Example 1 — a first encounter with The Invisible Bankers

Start with the simplest possible case. Write down what The Invisible Bankers 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 The Invisible Bankers 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 The Invisible Bankers 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 The Invisible Bankers

In research: The Invisible Bankers 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 The Invisible Bankers 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: The Invisible Bankers is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1982 non-fiction books, Business book stubs, Business books, so understanding it makes those chapters shorter.
In everyday life: Look for The Invisible Bankers 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 The Invisible Bankers in 20 minutes

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

Frequently asked questions

What is The Invisible Bankers in simple terms?

Why does The Invisible Bankers 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 The Invisible Bankers?

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 The Invisible Bankers.