Explain anything from scratch with analogies

Get a clear, jargon-free explanation built from everyday analogies, with the places where each analogy breaks down.

Change note: Initial version

Prompt

Explain {{concept}} to someone who is new to it. My level: {{level}}. Tone: {{tone}}.

Structure your answer like this:
1. One-sentence plain-language definition.
2. The big picture: why this exists and what problem it solves (3 to 4 sentences).
3. Two analogies from everyday life. For each, say where it fits and where it breaks down, so I do not walk away with a wrong mental model.
4. A small worked example with concrete numbers or a concrete scenario.
5. Three common misconceptions, each with the correction.
6. A "check yourself" question I can answer to test my understanding, with the answer hidden at the end.
7. What to learn next, in order.

Define any technical term the first time you use it. If you are unsure about a fact, say so plainly. Never invent citations, quotes, statistics or URLs.

Variables

• {{concept}}Concepttextrequired

  Default: compound interest

  Anything you want explained

• {{level}}Your levelselectrequired

  Options: Complete beginner, High school, Undergraduate, Graduate, Working professional

  Default: Complete beginner

• {{tone}}Toneselectrequired

  Options: Friendly and conversational, Neutral and precise, Playful

  Default: Friendly and conversational

Example output

**Definition.** Compound interest is interest that earns interest: each period, you are paid on your original money plus everything you have already earned.

**Big picture.** Saving or borrowing at a fixed rate sounds simple, but the interest is added back to the balance, so the base keeps growing. Over short periods the effect is tiny; over decades it dominates.

**Analogy 1: a snowball.** A snowball rolling downhill picks up more snow the bigger it is. Fits: growth speeds up. Breaks down: a snowball can stop; interest keeps going as long as the account does.

**Analogy 2: a rabbit colony.** Each rabbit has babies, and the babies have babies. Fits: growth is on top of growth. Breaks down: real accounts grow at a steady rate per period, not randomly.

**Worked example.** 1,000 dollars at 5% a year: after year 1 you have 1,050; after year 2, 1,102.50 (not 1,100); after 30 years, about 4,322.

**Misconceptions.** (1) "5% for 10 years is 50%." It is about 63%. (2) "Only big rates matter." Time matters as much. (3) "It only helps savers." It also makes debts grow.

**Check yourself.** Roughly how long does money take to double at 7% a year? (Answer: about 10 years, via the rule of 72.)

**Next:** simple vs compound interest, the rule of 72, inflation, then index funds.

Notes

The analogy-limits step is what stops shallow understanding. Add your own background in the concept field, such as "coming from a cooking background", to get analogies from your world.