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The builder's path

Five steps from a problem to its solution.

For: Older people living alone in Japan have no simple daily check that tells someone when they stop responding.

“The true creator is necessity, which is the mother of our invention.”
Plato · Republic II, 369c (tr. B. Jowett)

Routes to a solution

Six ways to take this forward

Each route is a different kind of journey, with real people and organisations to contact at each step, starting with those in Japan.

  1. Step 1

    Partner with a nonprofit on the ground

    They know the people and can run it with you.

  2. Step 2

    Pitch a foundation or CSR fund

    Show the evidence and the people it reaches.

What this problem needs

Ideas, sources and tools for this problem, from first interviews to funding.

  • Alerts
  • Privacy
  • Accessibility
  • Mobile

Ideas to explore

  • Idea 1Daily buttonA battery-powered button with a cellular or Wi-Fi chip; if it isn't pressed by noon, a LINE or SMS message goes to two chosen contacts.
  • Idea 2Habit sensorA door or fridge sensor that learns the normal daily pattern and alerts a contact only when no activity is seen for a set number of hours.

Specific to this problem

Talk to first

Starter prompt

Built from this problem's brief. Paste it into Claude or any AI assistant.

Help me design and build a first working prototype for this problem in Japan.

Problem: Older people living alone in Japan have no simple daily check that tells someone when they stop responding.
Who it hurts: People over 65 who live alone, and relatives or neighbours who live far away.
The moment it hurts: A fall or illness at home, when nobody notices for days because nobody expected to hear from them.
What people do today: Families phone when they can; neighbours, delivery workers or landlords raise the alarm after mail piles up or there is a smell.
Why it is still unsolved: Watch services exist, but a check that is cheap, needs no smartphone skills, and alerts a chosen person quickly is not standard for most people living alone.
What solved looks like: A low-cost device or phone routine where the person makes one daily action, such as pressing a button or opening the fridge, and a named contact gets an automatic message if nothing happens by a set time, with the person in control of who is told.
Where: Japan

First, list what you would need to learn from the people affected before building, as interview questions.
Then propose the simplest version that would help, the screens or messages it needs, and the data it would use.
Keep it cheap to run, accessible, and respectful of people's privacy. Flag anything you are unsure about instead of guessing.
  1. Understand it

    Talk to the people who live it before you build.

    “Knowledge itself is power.”

    Ipsa scientia potestas est.

    Francis Bacon · Meditationes Sacrae (1597)
  2. Prototype with AI

    Get a working version in front of people fast.

    Using AI is not cheating. Every tool carries the work of the people who made it, and using it well is how knowledge has always moved forward. The thinking, the care for the people who live the problem, and the judgement are still yours.

    “The Analytical Engine weaves algebraical patterns just as the Jacquard-loom weaves flowers and leaves.”
    Ada Lovelace · Notes on Menabrea's Sketch of the Analytical Engine, Note A (1843)
  3. Find the data

    Open data that fits this problem.

    “The first principle is that you must not fool yourself, and you are the easiest person to fool.”
    Richard Feynman · Cargo Cult Science, Caltech commencement address (1974)
  4. Build it

    Tools matched to what this problem needs.

    “Give me a place to stand, and I will move the earth.”

    δός μοι πᾶ στῶ καὶ τὰν γᾶν κινάσω

    Archimedes · as reported by Pappus of Alexandria
  5. Launch and get support

    Ship it responsibly, and find help and funding.

    “Whatever a great person does, others follow.”

    यद्यदाचरति श्रेष्ठस्तत्तदेवेतरो जनः

    yad yad ācarati śreṣṭhas tat tad evetaro janaḥ

    Bhagavad Gītā · 3.21

Kit written for this problem from its brief; every link was checked. Links go to each provider's own site. Zetema is not paid for any listing.