It is probably not you
Blame the ThingWas it you, or the door?
Pulled a door that needed a push? Turned on the wrong ring? When an everyday thing trips you up, the fault is usually in its design. Describe one mishap, run five quick design checks, and make a label to stick on it so the next go goes right.
1 The mishap free
Say what you saw, heard or felt. You can also drop a .txt file onto the box.
2 The label maker free
Not read yet
3 Run the diagnosis
One run judges the five checks from your description, scores it out of 10, names the first check that failed, says slip or mistake, and writes the label with one note for you and one for whoever made the thing.
The diagnosis - none yet
-Slip or mistake
The label
For you
For whoever made it
The page's check
4 Saved diagnoses
How the page decides
The five checks. Signs: could you tell what to do and where? Mapping: do the controls line up with what they change? Blocks: were wrong moves blocked or made hard? Feedback: could you tell what happened, straight away? Undo: could you get back from a wrong move? A check fails only when your description shows the problem; a check your description does not mention counts as holding up.
The score and the verdict, first match wins. Two points for every check that held up, out of 10. 4 or less: blame the thing. 6 or 8: a bit of both. 10: just a slip. The culprit is the first failed check in the order above. The page adds the score up again from the reply's own checks and shows its own sum if they differ.
Slip or mistake. A slip is the right idea with the action going astray (the wrong knob, a forgotten step, habit). A mistake is a wrong idea of how the thing works. When both fit, it counts as a slip.
The page's cues. Before any run, the page listens for words such as "no sign", "in a row" or "nothing happened" and lights the matching check on the wheel as a guess. Cues are word matches, not a judgement; the run reads your whole description.
Labels and notes only - not professional advice. Never open, rewire, force or cover anything, and never stick a label over a warning, a vent, a display or a control. Anything hot, electrical, gas or with moving parts: if it seems unsafe, stop using it and tell whoever is responsible. In a shared, rented, work or public place, ask whoever runs it before sticking anything on.