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Choices & CostsUnderstand through a scene

You’ve Waited 20 Minutes. Can You Leave Now?

Sometimes the time you have already invested makes it hard to decide whether to continue. A small moment outside a restaurant offers a way to separate what you have spent from what you might gain next.

When this hesitation feels familiar

If you stop, does everything you have done disappear?

You may be halfway through a book you no longer enjoy, or wondering whether to stay in a queue after a long wait. Stopping can feel as though it would turn all that time into a wasted effort.

This piece separates time already spent, conditions that still matter now, and what you might gain next. Whether you continue or stop, it offers a way to put your reasons into clearer words.

A question to carry through the pieceWhat am I hoping to gain from here, and what will I still have to spend?
Begin with the scene ↓

01

The moment it becomes hard to leave

Jiyeon joins a queue outside a restaurant for lunch. Between checking her phone twice and shifting her bag to the other shoulder, 20 minutes pass. Three groups are still ahead of her. A member of staff says it will probably take another 20 minutes for a table to become available.

She thinks of another restaurant: a ten-minute walk, then an estimated five-minute wait to be seated. She does not have to eat at the first place today. Let’s suppose both restaurants would give her a satisfying lunch at a similar price.

Moving would be a little quicker. Yet she finds it hard to step away. ‘I should have gone there in the first place. If I leave now, what were these 20 minutes for?’ The waiting that is already over occupies more of her attention than the waiting still to come.

02

Look at the time from now onward

If Jiyeon stays in this queue, she can expect to be seated about 20 minutes from now. Moving means a ten-minute walk and a five-minute wait on arrival: about 15 minutes in all. The 20 minutes already spent remain part of both choices. Neither option can give that time back.

Leaving does not make those earlier 20 minutes disappear all over again. Staying does not bring them back either. Under these assumptions, the five-minute difference is between the 20 minutes ahead if she stays and the 15 minutes ahead if she moves.

These numbers are fictional conditions chosen to make the comparison clear. Actual waiting times may grow longer or shorter. We are first holding the purpose and the satisfaction of the meal roughly equal, then bringing the other conditions back into the picture one at a time.

The starting point is now

Time already spent waiting 20 min · Time neither option can give back

From now until being seated

Stay in this queue

20min

Further wait 20 min

Go to the other restaurant

15min

Walk 10 min + Wait 5 min

Under these assumptions, the remaining time differs by five minutes. The earlier 20 minutes apply to both options and do not create a time difference between them.

A fictional comparison of the time until being seated, not until finishing a meal. The purpose, price and satisfaction of the meals are assumed to be similar. This is not a prediction of actual waits or a calculation recommending an action.

03

A name for what has already been spent

Time or money already spent that cannot be recovered through the choices ahead is called a ‘sunk cost.’ Rather than memorizing the name, it can help to ask: ‘Could changing my choice now actually get this back?’

Jiyeon still feels reluctant to waste the time she has spent. Separating that feeling from the wait ahead reveals different reasons for the same action. ‘I’ve waited so long, so I’ll keep waiting’ and ‘What I’ll get is worth the further wait’ both mean staying in the queue, but the expectations behind them differ.

Keep Jiyeon’s current place in the queue and both waiting estimates unchanged, and restate the options she has now. She could be seated here in 20 minutes or at the other restaurant in 15. After separating out the time, she can consider other conditions alongside it, such as her food preferences and how she feels physically.

04

Does that mean leaving is always better?

If Jiyeon particularly likes the food at the first restaurant, she may have a reason to wait five minutes longer than at the other restaurant. If the route to the other restaurant involves a long flight of stairs and her legs are already aching, the ten-minute walk also carries a different burden. Less time does not make two choices equivalent.

We can separate the fact that she has waited from the tiredness she feels after waiting. She cannot recover those 20 minutes, but her present fatigue affects the walking or standing ahead. This is not an instruction to erase everything that happened before.

Information learned while waiting matters too. If the queue has barely moved, or staff have just shown in a group with a reservation, that may give her a reason to ask again about the remaining wait. Information gained in the past and costs paid in the past play different roles.

Staying because she wants the first restaurant’s food and staying because she fears losing the earlier 20 minutes can look the same from outside. The reasons for spending another 20 minutes are different, though. There is room to consider what Jiyeon hopes to get from that time.

Consider the other conditions

Looking again at Jiyeon’s choice, which condition would you most like to know more about?

Open any conditions you are curious about to read how they could change the comparison. You can keep several open together. There is no correct answer or score.

How much she likes each restaurant’s food

The same five minutes can mean something different when the satisfaction ahead differs. If she prefers the first restaurant’s food, she can compare that added satisfaction with the further wait.

How tired her legs are now

The 20 minutes already spent standing cannot be recovered, but her present fatigue remains. It affects whether walking or continuing to stand will be more burdensome from here.

How reliable the waiting estimates are

If both 20 and 15 minutes are estimates, a five-minute difference is not enough for certainty. Checking how reliable each estimate is may change the basis of the comparison.

05

Bring the question to another choice

A similar hesitation can appear when you have read a hundred pages of a book but no longer feel drawn to pick it up. ‘I’ve come this far. I ought to finish it.’ You can briefly separate those first hundred pages from the reading time still ahead.

If you are curious about what comes next, or want to continue the experience of reading, those are reasons to go on. If the book serves a course of study you have chosen, finishing it may give you something you need. If only the time already invested is keeping the book open, you could also consider pausing or changing how much you read.

The reading you have already done does not vanish in this case either. What you have learned remains, and whether to read the next page is a choice you can make now. Neither continuing nor stopping is always the wiser choice.

Back outside the restaurant, Jiyeon looks at the menu by the door. It lists the dish she had wanted to eat. Her phone shows the walk to the other restaurant. The shoulder carrying her bag aches a little.

She loosens her grip on the bag strap and adjusts it. She looks once at the dish on the menu, then at the other restaurant’s name on her phone. Her finger rests over the map, and her feet are still in the queue.

A note for your next choice

Room to keep three things separate

A way to look again at what you are comparing, whether you stay or leave.

01

Already spent

Time and money that neither choice can recover.

02

Still relevant now

Your present condition and preferences, your place in the queue, and information you have learned.

03

What lies ahead

What you hope to gain, and the further time and effort it would take.

Try it on a choice of your own OPTIONAL

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An original explanation with fictional examples written for Rantap with AI assistance. The character, restaurants and waiting times are used to explore the concept.

Concept reference: OpenStax · Principles of Economics 3e · 2.1 · Sunk Costs

Used to check the concept definition. The characters, situations, numbers and prose on this page were written separately.