Entering the module
One sentence: every euro and every hour you put somewhere cannot be put anywhere else — so real value is measured by what something gives you and by what you give up for it.
Chapters:
- Missed opportunities
- In yourself versus in things
- Experiences versus things
- Experiences versus property
- Buying time
- Relationships versus assets
- The balance: the map of real value → The iron principle of the module
For the youngest · ages 6–7
🐣 The youngest: With one coin you can buy only one thing. If you choose an ice cream, it is gone for the little book. Some things grow with time — like a seed you plant. Knowing how to ride a bike stays with you for ever. Happy days with the people you love grow when you tell about them.
Play together (5 minutes): Plant a bean in a cup with wet cotton wool. Look at it together every day and draw how much it has grown. Talk about what else grows with time — skills, friendships, memories.
A question for the evening: "What did you learn this year that still helps you?"
A game from the catalogue: OB-03 "A book swap market" — https://pecuvo.eu/igri/katalog/#ob-03 (in Bulgarian)
Chapter 1 · Missed opportunities
👧 Child If you buy ice cream for everyone with €10, you can't buy a book with the same €10. What you give up is called a missed opportunity. Choosing is not bad. It is good to know what you are choosing.
🧑 Teenager Economists call this opportunity cost: the cost of a choice is the best thing you gave up. People rarely think of it on their own. In a famous experiment by Frederick and colleagues (2009), fewer people buy a DVD for $14.99 if they are reminded that the money could also go on something else. The reminder alone changes the decision.
🧔 Adult ✔ How strong it is: a later review of 39 experiments (more than 14,000 people) confirms the effect, but finds it much weaker than at first (Maguire, Persson and Tinghög, 2023). A separate study with five experiments finds that the effect is the same in people with high and low incomes (Plantinga and colleagues, 2018).
The practical rule remains strong: before a big decision, name the alternative out loud. "If I don't buy this, the money becomes… (a reserve, a course, a holiday with the children, a debt paid off)." Opportunity cost also applies to time: hours in traffic, maintaining a thing, a second job.
Myth → truth
- Myth: "I bought it cheap, so I saved."
- Truth: you saved only if, without the purchase, the money would have gone on something less valuable.
Who profits? Sellers — when we see only the price and not the alternative.
Scene for 3D: a forking path. On each branch the child sees what happens to the same €10 and the same hour.
Your step in Pecuvo: before a big purchase — in "Goals", see how many months of your goal it costs you.
Sources
- ✔ Frederick, Novemsky, Wang, Dhar & Nowlis, "Opportunity Cost Neglect", Journal of Consumer Research 36, 2009, 553–561 — https://ideas.repec.org/a/oup/jconrs/v36y2009i4p553-561.html
- ✔ The meta-analysis: Maguire, Persson & Tinghög, "Opportunity cost neglect: a meta-analysis", Journal of the Economic Science Association 9, 2023, 176–192, DOI 10.1007/s40881-023-00134-6 — 39 experiments, N = 14,005, d = 0.22 (the abstract, opened 21.10.2026)
- ✔ The same effect in poor and rich: Plantinga, Krijnen, Zeelenberg & Breugelmans, "Evidence for Opportunity Cost Neglect in the Poor", Journal of Behavioral Decision Making 31, 2018, 65–73, DOI 10.1002/bdm.2041 — five experiments, N = 2,325 (the abstract, opened 21.10.2026)
Chapter 2 · In yourself versus in things
👧 Child If you learn to ride a bike, the skill stays with you for ever. The new bike gets old. Learning is a present you give to your future self.
🧑 Teenager Economists call knowledge, skills and health human capital (Gary Becker). It is the asset you carry everywhere and nobody can take from you. According to the OECD, people with more education on average earn more and are less often out of work ✔ (OECD, "Education at a Glance 2025"). But "in yourself" does not mean only a degree:
- a language;
- a craft;
- the ability to communicate;
- health.
🧔 Adult For Flow 1 and Flow 2 (Module 10), skills are the main asset. They set the price of your work. Reinvesting in yourself has the qualities of a good asset:
- it brings income — a higher value per hour;
- it is hard to devalue, if you keep it up;
- it cannot be confiscated.
There are risks too: a course that nobody values is also an expense. The questions before a course: who pays more for this skill? Can I use it within three months? How much does it cost me in time?
Myth → truth
- Myth: "Investment means only property and shares."
- Truth: for most people the surest return comes from their skills and their health.
Who profits? You — in the long run. Beware of "passive income courses" (the module "Fraud, pyramids and getting rich quick"): they sell a dream, not a skill.
Scene for 3D: a backpack on the child's back. Every skill is a glowing tool inside it. The things stay in the room when the child sets off.
Your step in Pecuvo: a basket "Learning and growth" — with a budget, not "if anything is left".
Sources
- ✔ Becker, "Human Capital", NBER / Columbia University Press, 1964.
- ✔ OECD, "Education at a Glance 2025", DOI 10.1787/1c0d9c79-en — the presentation by A. Schleicher (9.09.2025): "Tertiary qualifications pay higher earnings", "Unemployment for tertiary graduates is low" (opened 21.10.2026; no specific figures used in the text).
Chapter 3 · Experiences versus things
👧 Child Do you remember your best day last summer? It was probably something you did, not something you bought. Memories grow when you tell them.
🧑 Teenager Van Boven and Gilovich (2003) asked thousands of people which purchase made them happier: an experience (a trip, a concert) or a thing. Most chose the experience. The reasons the researchers suggest:
- experiences are shared;
- they become part of you;
- they are hard to compare with other people's.
🧔 Adult A large review (Weingarten & Goodman, 2021 — 141 studies) confirms the advantage of experiences ✔ (Journal of Consumer Research 47(6), DOI 10.1093/jcr/ucaa047; the abstract, opened 21.10.2026). The caveats:
- about one third of the effect may be due to weak results being published less often; and the advantage is linked more to closeness with people than to happiness as such;
- the effect is weaker at lower incomes — when basic needs are not covered, things (a fridge, a bed) are real value.
The practical conclusion: once the basics are covered, experiences — especially with people — usually bring more than the next thing.
Myth → truth
- Myth: "Things last; experiences end."
- Truth: the thing lasts, but the joy of it fades (Module 14). The experience ends, but the memory often becomes more precious.
Who profits? The industry of things — when we buy the next thing instead of the next memory.
Scene for 3D: two shelves. On one, the things fade with time. On the other, the photographs and memories shine brighter whenever the child tells about them.
Sources
- ✔ Van Boven & Gilovich, "To Do or to Have? That Is the Question", Journal of Personality and Social Psychology, vol. 85, no. 6, 2003, pp. 1193–1202, DOI 10.1037/0022-3514.85.6.1193
- ✔ Weingarten & Goodman, Journal of Consumer Research, 2021 (meta-analysis: 141 studies, d ≈ 0.38): https://bpb-us-w2.wpmucdn.com/u.osu.edu/dist/0/37067/files/2021/04/Weingarten-and-Goodman_JCR2021.pdf
Chapter 4 · Experiences versus property
👧 Child Home is the place where it is warm and calm. That is very important. But a home is not just walls — it is also the people and the experiences in it.
🧑 Teenager In many countries property is seen as the safest investment, and in some most people live in a home they own (see the box below). That is understandable. Property gives security and a roof. But it has a cost:
- a large sum in one place;
- it is hard to sell quickly (Module 3);
- upkeep, taxes, empty months;
- often a loan for decades.
Example: Bulgaria — Over 85% of people live in a home they own (Eurostat, ilc_lvho02: 86.1% for 2025) ✔. Property is often considered the safest investment.
Check in your country — Eurostat's table ilc_lvho02 shows the share of owners and tenants in every EU country.
🧔 Adult The question is not "property or experiences", but how much of your life you lock into one thing and what you miss because of it:
- the home you live in is first of all consumption — a roof and security. An asset that "brings in money" (Module 3, Chapter 1) is something different;
- the instalment and the mortgage have an opportunity cost: years in which the money does not go to a reserve, skills, children, experiences;
- investment property is a business (Flows 3–4, Module 10) — with tenants, repairs, risk, not "safe money".
Honestly: for one family, owning its home is of enormous value — peace of mind, roots, security. For another it is a burden that stops mobility and life. Pecuvo does not judge. It helps you do the sums.
✔ How certain it is: the high share of owners in Bulgaria is a fact (Eurostat, opened 21.10.2026). Why it is so high — history, incomes, tradition — has not been separated out by a national study, so we don't explain it with one cause.
Myth → truth
- Myth: "Property never loses."
- Truth: property prices rise and fall. A loan carries risk. Illiquidity has a cost when you need the money quickly.
Who profits? Banks — from mortgages. Developers and brokers — from the belief that "property is the only security".
Scene for 3D: a house on a pair of scales. On the other side — years, experiences, the freedom to move. The child adds and removes weights and looks for balance, with no "right / wrong" answer.
Your step in Pecuvo: the mortgage — as a "debt" with a "pay off" goal. The home — in "Net worth" as an asset with a separate label "home (consumption)".
Chapter 5 · Buying time
👧 Child Sometimes grown-ups pay so that they don't lose time on something boring, and so they have more time to play with you. Time is valuable too — sometimes more than money.
🧑 Teenager Whillans and colleagues (2017, PNAS) asked more than 6,000 people in four countries. Those who pay to save time (cleaning, food delivery, repairs) are more satisfied with life. And this holds across income levels. In a field experiment, working people who spent the same amount on saving time rather than on a thing felt better.
🧔 Adult Time is the only resource that does not come back. That is why "buying time" is a reinvestment:
- in rest;
- in people;
- in work that only you can do.
The question is which time you buy and what you use it for. If the hour you saved goes into more work with no purpose — it is lost.
Myth → truth
- Myth: "Paying for something you could do yourself is a waste."
- Truth: sometimes it is the best purchase — if the time saved goes on something more valuable.
Who profits? You and the people around you — if the time saved is for them.
Scene for 3D: an hourglass. The child "buys" sand — the hourglass turns more slowly, and in the free space the people the child spends time with appear.
Sources
- ✔ Whillans, Dunn, Smeets, Bekkers & Norton, "Buying Time Promotes Happiness", PNAS 114(32), 2017, 8523–8527 — https://pmc.ncbi.nlm.nih.gov/articles/PMC5559044/
Chapter 6 · Relationships versus assets
👧 Child Friends and family are the greatest wealth. You can't buy them, but you can give them time and attention — and they grow.
🧑 Teenager The Harvard Study of Adult Development has followed people since 1938 — and now their children too. Its most consistent finding is that people with close, warm relationships are happier, healthier and live longer. Wealth and status on their own do not give the same. What matters is the quality of relationships, not their number.
🧔 Adult Relationships also have an economic side:
- your network of people is a source of work, partnerships and help in hard times;
- in Pecuvo they are part of "the five cash flows" and of public funding — projects are done with partners (Module 11).
But relationships are not an "investment" that must bring income — they are a value in themselves. The traps:
- money that destroys relationships (loans between relatives without clear rules, inheritances, hidden debts);
- time we take from our loved ones in order to pile up assets.
Myth → truth
- Myth: "First I'll make money, then I'll have time for people."
- Truth: relationships don't wait. The research shows that they, not wealth, go together with good health and happiness.
Who profits? Everyone in the circle (the four circles — Module 13).
Scene for 3D: two gardens — "assets" and "people". The child has limited water (time and money) and watches what grows. The "people" garden needs regular water, not one big soaking a year.
Your step in Pecuvo: a basket "People and time together" — presents, meetings, trips with loved ones. If you have a shared budget with your family — a "Family" space with clear rules.
Sources
- ✔ Harvard Study of Adult Development — Waldinger & Schulz, "The Good Life" (2023): https://news.harvard.edu/gazette/story/2023/02/work-out-daily-ok-but-how-socially-fit-are-you · https://news.harvard.edu/gazette/story/2025/05/things-money-cant-buy-like-happiness-and-better-health
Chapter 7 · The balance: the map of real value
👧 Child Before you spend, ask three questions:
- What will I get?
- What am I giving up?
- How long will it make me happy?
🧑 Teenager The map of real value has two axes:
- does it bring money (financial value);
- does it bring life — skills, health, time, people, memories.
| Brings life | Doesn't bring life | |
|---|---|---|
| Brings money | skills, health, a business with a mission, community projects | an asset for income only — fine, as long as it doesn't take your life |
| Doesn't bring money | experiences, time with people, giving | things bought for status — most often they lose on both |
🧔 Adult Reinvesting is a matter of order, not of prohibition. A typical good order (following the iron principles):
- a reserve and no expensive debt (Module 8);
- skills and health (here, Chapter 2);
- time and people (Chapters 5–6);
- assets that bring income, within your means and knowledge (Module 3, Module 10);
- things — deliberately, with the opportunity cost in front of your eyes.
The order differs from person to person — and that is where values come in (Module 13). Missed opportunities are not a failure. They are the price of every choice. The aim is to choose them consciously.
Myth → truth
- Myth: "Real value is what can be sold."
- Truth: the most valuable things — skills, health, relationships, memories — cannot be sold. But they can be lost.
Who profits? You — when money serves life, and not the other way round.
Scene for 3D: the map with the four fields. The child places coins and hours in each field and watches the "garden" of their life grow.
The iron principle of the module
Every purchase is a choice between this and everything else you could do with the same money and the same time. Invest first in what brings life — skills, health, time, people — then in things.
- 👧 Child: what will I get, what am I giving up, how long will it make me happy?
- 🧑 Teenager: name the alternative before you pay.
- 🧔 Adult: once a year, put your spending and your time on the map of real value. Where do they go? Is that where you want them?
Your step in Pecuvo: baskets "Learning and growth", "People and time together", "Giving"; goals with the opportunity cost in front of your eyes; the home with the label "home (consumption)".
Check yourself (3 questions per level)
- 👧 1. What is a missed opportunity? 2. Why is learning a present for your future self? 3. What three questions do you ask before you spend?
- 🧑 1. What does research show about experiences and things — and what is the caveat? 2. Why can "buying time" be a good purchase? 3. What is the most consistent finding of the Harvard study?
- 🧔 1. Why is the home you live in mainly consumption? 2. What are the risks of reinvesting in yourself? 3. How do you order your reinvestment — and why is the order personal?