Meet one fictional person
Every run creates a reproducible starting profile. Both paths begin with the same family, birthplace, and resources.
AN INTERACTIVE LIFE EXPERIMENT EVERY CHOICE ECHOES
One beginning.
Two possible lives.
Same person. Same starting circumstances.
What changes when you take a different road?
No sign-up · About 3 minutes · Free to explore
YOUR PARALLEL LIFE EXPERIMENT
One start. Two paths.
Change a decision, then see both possible stories unfold.
THE SHARED BEGINNING
Meet your person
Both futures start from this exact same life.
LOCKED START #0000
01 / THE SANDBOX
Which road will they take?
Pick a decision below. Both paths remain the same until the fork.
THE LIFE MAP Life A Life B
STARTSame roots
AStay close
BTake a chance
THE TURNING POINTAge 18One choice, two futures
EXPLORE THE YEARSAge
02 / THE DECISIONS
Change the story
Choose a theme, then set a different decision on each path.
How long will they stay in education?
Every future is a story worth exploring.
Change a decision above, compare the trade-offs, and see how the same start can lead to different experiences.
* All characters and outcomes are fictional. Savings use invented “life credits,” not real income; wellbeing is an illustrative index, not a health prediction. These stories do not estimate real-life causation or individual futures.
HOW IT WORKSSame roots.
Same roots.
Different branches.
Fork at a choice
Compare two decisions across education, location, career, and personal balance, then travel through the years.
Notice the trade-offs
See the narrative and numerical consequences of the model's illustrative assumptions—not a prediction.
BEHIND THE EXPERIMENTA transparent model,
A transparent model,
not a crystal ball.
Parallel Lives is a thought experiment, not a population sampler or a scientific model of causation. Its person profiles and outcome numbers are invented for interactive storytelling and are not presented as official demographic observations.
Model parameters are local, auditable JavaScript: education changes assumed learning costs and opportunities; location changes living expenses and income; career affects workload and savings; balance affects free time. A shared deterministic seed keeps background noise the same for both paths.
MODEL NOTES · V1
- Data: invented examples only, no external population datasets
- Time: ages 18–70, one-year steps
- Privacy: no account, cookies, analytics, or server-stored choices
- Sharing: a URL with fictional scenario options and seed only
- Scope: not financial, medical, or career advice
Last reviewed: November 2026