You’re halfway through a job with an AI and it’s lost the thread. So you paste the whole lot back in, or you start again, or you explain the same thing for the third time before lunch.
The instinct is to reach for more room. A longer memory, a bigger window, a newer model.
I learned the other answer in 1982, on a machine with 48K.
The listings came printed in magazines and I typed them in by hand, line by line, character by character. An evening’s work for a program that might not run at all. Most of the other kids loaded a game off a cassette and left it there.
I made the clock work.
I spent a year building my way back to that, and I was proud of it, until I went through it idea by idea last week and worked out where each one had come from. Every idea worth having was already sitting in that black plastic wedge with the rubber keys.
The machine was Sir Clive Sinclair’s, and the achievement was never the 48K of memory. It was the price.
Before him, a computer was somewhere you went. A university, a laboratory, a company that could sign off four figures without flinching. He’d already done the trick once with the calculator, which was a piece of desk furniture with a mains lead until he put one in a pocket. Then the ZX80, the ZX81, and in 1982 the Spectrum — at a price an ordinary family could reach without sitting down first to discuss it.
Forty years on, I was paying Semrush £128 a month. It sat in the company books from May 2024 until I stopped it at the end of May 2025. What it promised me was that I wouldn’t have to think about any of this.
He wasn’t trying to make computing precious. He was trying to make it ordinary, and cheap, and yours.
Here’s the part that matters to you, and it isn’t nostalgia.
Nobody working inside 48K of memory thought of the limit as a feature. You got on with it. But what came out the other side was a generation who couldn’t afford a single wasted byte, and so weighed every one.
The cheapness forced the discipline. The discipline outlasted the cheapness by forty years.
Which brings me back to the room you were reaching for at the top.
More room buys one thing reliably, and it is permission to stop deciding. More context so nothing needs pruning, more pasted in so nothing needs choosing, more model so nothing needs understanding. The tape had no such offer. You worked out what had to be in memory before you pressed play, because there was no going back to it.
The constraint was never the thing holding the work back. On a good day it’s the thing making the work good.
That’s the whole lesson, and it took me a year and a great deal of cleverness to arrive back at it.
What he got for it
He kept going after the Spectrum, and this is the part people leave out.
A flat-screen pocket television, years before anybody wanted one. Then the C5 in 1985 — a small electric single-seater for short trips round a town — wheeled out into the kind of national laughter that follows a man for the rest of his life and some way past it.
It’s a vehicle category you can now see from any window in Britain.
He wasn’t wrong about the C5. He was about thirty years early, and the market prices early and wrong at exactly the same rate. In 1986 he sold the computer business to Amstrad. He died in 2021, remembered by a great many people for a vehicle almost nobody bought.
I got a career out of a decision somebody else made about a price, and he was gone before it occurred to me to say so.
Everything he built was aimed at getting computing out of the institutions and into the hands of somebody ordinary, cheaply enough that she’d actually do something with it.
I run thirty covers out of a terminal, on my own, in a town he’d have recognised. That’s not a clever new model of business. It’s his model of computing, still doing exactly what he built it to do.
The machine got cheap so the person could get good.
I’ve written the whole thing up — the three ideas I was certain were mine, where each of them actually came from, and why being early looks identical to being wrong right up until it doesn’t.
Everything I Thought I Invented, Sir Clive Sinclair Got There First
If you have a machine like that in your history, I’d like to hear which one it was.
