The grammar of spreadsheets.
Why spreadsheets are the longest-lived software category.
My financial spreadsheet is ten years old. It has survived three laptops, two countries, and one major life change. I keep it because it works, and I have spent the last year trying to understand why.
The grammar
A spreadsheet sentence has three parts: what you have, what you owe, and what you did with the difference. Every row is a transaction. Every column is a category. The formula is the grammar that connects them.
Why it works
The act of recording is the point. Not the data, not the analysis — the moment of typing the number. It forces a brief encounter with the decision you just made.
A financial record is not a ledger. It is a mirror.
Most budgeting apps remove the friction. They import transactions automatically, they categorise with machine learning, they show you graphs. They are better at everything except the one thing that matters: making you stop and notice.