Edition 001 24 Aug–30 Aug 2026

Five useful questions this week

Five independent lessons, each selected because it is useful in its own right. No manufactured theme.

01 · Question

02 · Plain answer

03 · Picture

□

04 · Use it

→

05 · Evidence

✓

Mon · Investing Basics · Foundation

Saving vs investing vs trading: what is the difference?

Saving keeps money as cash, usually for security and ready access. Investing puts money into assets with the aim of building wealth or income over years, while accepting that their value can fall. Trading involves buying and selling assets more actively to try to profit from shorter-term price movements, usually with greater demands on time, decision-making and cost control.

? = □ → ✓

Tue · Street Smart · Market reality

Why do financial markets exist?

Financial markets exist to move money from people and institutions that can invest it to businesses, governments and others that can use it, while giving investors a way to trade those financial claims. They also help discover prices, provide liquidity and transfer risk, although none of those functions works perfectly all the time.

? = □ → ✓

Wed · Trading · Active application

Trading vs investing: how do they differ in practice?

Investing usually means buying assets to pursue a long-term goal and judging them mainly by their underlying value and continued suitability. Trading means trying to benefit from shorter-term price movements, so entry timing, exit rules, position size and execution costs become central to every decision. Neither approach is automatically safe, but trading generally demands more frequent decisions and leaves less room for mistakes.

? = □ → ✓

Thu · Small Caps · Specialist equities

What is a small-cap company?

A small-cap company is a listed company with a relatively small market capitalisation: the market value of all its outstanding shares. You calculate it by multiplying the current share price by the number of shares outstanding. There is no universal cash cut-off, so ‘small-cap’ depends on the market, index or fund making the classification.

? = □ → ✓

Fri · Crypto · Alternative assets

What is a cryptoasset and what gives it value?

A cryptoasset is a digital representation of value or rights that can be stored or transferred electronically and is secured using cryptography. Its price is set by supply and demand; usefulness, credible scarcity, rights, backing and trust may support demand, but none guarantees lasting value.

? = □ → ✓

Previous editions

Browse the publishing rhythm

Edition 005
21 Sep–25 Sep Edition 5 — Look beyond the label 5 lessons → Edition 004
14 Sep–18 Sep Edition 4 — The constraint behind the choice 5 lessons → Edition 003
7 Sep–11 Sep Edition 3 — The price is not the outcome 5 lessons → Edition 002
31 Aug–6 Sep Edition 2 — Risk 5 lessons → Edition 000
17 Aug–23 Aug Edition 0 — How Plain Interest works 5 lessons →

Start with a question

Evergreen discovery, not a feed

Search plain-English questions…

I’m building foundationsShares, funds, risk and returns →

I want market realityOrders, spreads, custody and fees →

I’m applying the ideaPositions, sizing and exits →

I need specialist contextSmall caps and cryptoassets →