The Journal · 05
On disbelieving your own work on a schedule.
Almost every expensive mistake we have made worked perfectly on the machine where it was built. The page opened on a widescreen monitor with a wired connection and a full battery, handled by the person who knew its quirks. Then a real person met it on a real phone in real daylight, and the work failed in a way nobody had imagined was possible, because nobody had gone to look.
The phrase "we tested it" is doing a lot of hiding in this trade. It can mean an afternoon of clicking, a checklist nobody owns, or a number produced by the same person who wanted the thing to work. We have learned to distrust all three, and the replacement is simpler and less comfortable: verification is scheduled disbelief. You assume the work is broken, then go and find out where, on devices you do not control, at widths you did not design for, and you do it on a schedule — before the client sees it, not after.
It is the same muscle as accounting. A number is not because you can see it on a screen; it is right because a different person, or at minimum a different method, has disagreed with you and lost.
In practice: every build is measured at the widths people actually hold, in a real browser, and the numbers are written down — overflow checks, load behaviour, what a tap does and where it goes. Every interactive claim gets a machine's answer rather than a person's confidence. The games run wider tests again, because play punishes a broken detail in the first thirty seconds and then tells everyone about it. And the record of those checks stays with the work, so that when something is described as verified, the verification has a receipt rather than a memory.
The uncomfortable part is that verification is rarely dramatic. It produces sentences like "the fourth tile is one pixel wide on a mid-range Android in bright sun" at inconvenient hours. That is what it costs to make the word "verified" mean something. A studio that sells verification should not find the price surprising.
Disbelieve your own work, on a schedule, in writing. Then say yes to it.
Villiz · Journal · October 2026