Ivan Illich
Count what the tool costs you
Time saved and time spent belong on one ledger
Energy and Equity (1974)
An arithmetic problem about cars, and the reason it applies without modification to the tools on your machine.
What actually happened?
He did the sum. A typical American man spends more than sixteen hundred hours a year on his car — driving, sitting in traffic, taking it to be repaired, and **working to pay for it**: purchase, petrol, insurance, loan. Those sixteen hundred hours buy him about seven and a half thousand miles. Divide, and it comes to under five miles an hour — roughly walking pace. The point is not that cars are useless. It is that we count the hours spent travelling and never the hours spent earning the thing. Savings go on one ledger and costs on another, which is how every tool saves time.
Put both ledgers on one page and the answer often flips
Every tool advertises the time it saves. The real cost also includes learning it, maintaining it, firefighting when it fails, working to pay for it, and getting back into the work after it has interrupted you. Those land on different days, which is why nobody adds them up.
Convert the monthly fee into your own hours, then add the weekly maintenance. A surprising number of tools stop making sense at that step.
Fragmented time costs more than occupied time
A five-minute interruption does not cost five minutes. In his arithmetic the working-to-pay-for-it hours are the visible cost; the larger hidden cost of a modern tool is that it cuts the day into pieces, and anything requiring real thought can only be done in a whole one. Fragments do not add up to it.
Six fifteen-minute meetings occupy ninety minutes and take the day, because no remaining stretch is long enough to get in.
Measure first, then decide; do not pick a side first
The value of the method is that it is arithmetic rather than attitude. He did not say stop driving; he published a division anyone can run again. Run it on a specific tool and the answer is sometimes worth it and sometimes I have been working for this thing. Both beat a position.
Run it on the three tools you lean on hardest: total hours in, divided by what it actually finished for you. The worst score is the one to renegotiate.
How do I use it today?
Where you are: you have installed a stack of things that save time and your days are fuller than before.
Ask first: adding the hours to learn it, maintain it, pay for it and recover from its interruptions — how much did it actually save?
Where it goes wrong: using the sum to dismiss tools in general. He calculated a specific number, not a stance; whatever comes out ahead deserves to be used harder.
Lines to keep
Count the hours worked to pay for it: five miles an hour.
Savings on one ledger, costs on another: that is how tools save time.
Work that needs thought happens in whole hours, never in fragments.
Same situation, other people are asking
The work at home genuinely never ends.My day comes in pieces. Is that why nothing deep gets done?I was busy every hour and moved nothing that needed real thought.Everything urgent gets done and nothing important does.There's never enough time · all 7 questions →If this one named what you are going through,
send it to someone who needs it, or keep it somewhere you will find it again.