Home — Learn — The 100-year shift
A hundred years of the home, in one idea — and a way to work out where your own house sits on it.
Every device in your home has always done what it was told. The thing that actually changed, decade by decade, is who does the telling — and how much of the thinking is handed over.
That single line explains more about smart homes than any product comparison will. A plug-in timer, a learning thermostat and an AI assistant are not different technologies competing with each other. They are three points on one gradient, and knowing which point you are buying is the difference between a house that helps and a drawer full of disappointments.
What follows is that gradient as nine steps. Each one adds a small amount of judgement to the machine and takes a small amount of work off you.
A conceptual timeline. The dates overlap because technologies coexist and mature at different rates.
1900s – 1950s
Electricity arrives, and with it the light bulb, the fridge, the washing machine, the vacuum cleaner and the first thermostats. These machines save your arms and legs, but not your attention.
Cold? You get up and turn the dial. Dark? You flip the switch. Nothing happens unless a person makes it happen.
You do all the thinking and all the acting.
1960s – 1970s
Timers and simple electrical switching mean a device can act at a moment when you aren't standing next to it. The decision is still entirely yours — you just make it in advance.
The sprinkler that comes on at six in the morning. The water heater on a time clock. The lamp on a plug-in timer while you're away.
You do the thinking early; the machine does the acting later.
Late 1970s – 1990s
A switch by the front door can now control a lamp at the back of the house, because devices send signals to one another. You write the rules; the house follows them exactly, forever, whether or not they still make sense.
The best-known system was called X10, which sent its signals down the electrical wiring already in the walls — no new cables needed.
“When the porch switch goes on, turn the hall lamp on too.” Simple, rigid, and completely blind to whether anyone is actually there.
You write fixed rules; the house obeys them literally.
1990s – 2005
Lighting, heating, alarm, curtains and music get joined into one system with one control panel. It works well, but it's expensive and it's programmed by a hired specialist rather than by you.
This is the odd step out. The decisions are still human decisions — they have just moved from the person living in the house to the person installing it, which is why changing anything meant booking a call-out.
A wall panel with a “movie night” button that dims the lights, drops the blinds and turns on the amplifier. Brilliant, until you want a tenth button.
A professional writes the rules on your behalf.
2005 – 2012
Home broadband, wireless internet and the smartphone put a remote control in your pocket that works from anywhere on earth. The kind of decision hasn't changed at all — only the distance it travels.
Turning the air conditioning on from the car. Checking the front-door camera from a hotel. Realising from the office that you left the garage open.
Same decisions, made from further away.
2012 – 2020
Voice assistants arrive in cheap speakers, so instructions become spoken rather than typed or tapped. Meanwhile the first learning thermostats begin noticing your habits and forming their own schedule.
“Turn off the kitchen lights.” And a thermostat that, after a fortnight, has worked out you go to bed around eleven and cools the house before you're up.
You give the orders; the house makes small guesses of its own.
2020 – 2024
Cheap sensors and your phone's location let the house respond to conditions rather than to the clock. Different brands also start working together properly, so a system stops meaning “everything from one company”.
Two terms you'll see: geofencing is the house using your phone's position to know you're on your way home. Matter is the shared standard that lets a bulb from one brand answer a hub from another.
Cooling that stays off when the house is empty and comes on as you approach. Lights that only trigger after dark. A leak sensor that shuts off the water on its own.
You set the conditions; the house judges when they're met.
Everything above runs on rules a person wrote down, even the clever-looking ones. Everything below works out what to do from a goal it was never given step-by-step instructions for. That is the real break in the story — not voice control, not apps, not the word “smart”.
2023 – now
Systems built on AI language models can take a vague, human sentence and turn it into a sensible set of actions, drawing on what the sensors say, what the weather is doing and what you've asked for before. You describe the outcome you want, not the steps to get there.
You say “I'm freezing.” Instead of nudging one dial, it turns the heat up, closes the blinds, and mentions that the bathroom window has been open for an hour.
You say what you want; it chooses how.
Emerging
The next step, still mostly ahead of us: an assistant that lives on hardware inside the house, remembers your preferences over years, weighs several of them at once, and quietly changes its own behaviour as your life changes.
You say “keep us comfortable, keep the bill under a hundred a month, and don't wake the baby.” From then on it decides what runs, and when, without asking.
You set the goal; it handles everything underneath.
Six questions, no email required. Answer honestly — most people land lower than they expect.
0 of 6 answered.
The dates overlap on purpose. Nothing replaced anything. You almost certainly own a plug-in timer, a light switch and a voice assistant, all at once. The steps describe kinds of thinking, not eras that ended.
Most homes are nowhere near the bottom. The typical house today sits around step five or six — an app, a speaker and a couple of clever bulbs. Steps eight and nine describe what is possible, not what is normal.
Handing over decisions is a trade. Less effort for you, but also less certainty about why the cooling came on, and more of your household routine sitting on somebody's computer. That second cost is the one we work hardest to keep down, by putting the reasoning on hardware you own. It is still worth weighing rather than assuming.
This is a conceptual timeline, not a strict record. Technologies coexisted for decades and matured at different speeds, so the eras are indicative and the bars are illustrative rather than measured.
The twenty-minute demo ends with an honest answer about what your house can already do, and what it would take to move it a step or two along the line.