A sign that says most guests reuse their towels outperforms a sign that says please reuse your towels. The norm does the work the instruction could not.
Adept
The hidden part#0509
A norm does not argue. It reports what others do, and the report adjusts behaviour without requiring agreement.
The opening question sets a frame. Every answer that follows is given inside it, and the respondent cannot see the frame because they are standing in it.
Adept
The hidden part#0134
The first question is not a question. It is the frame in which the second question will be understood.
The often-quoted single figure for forming a habit does not survive measurement. Observed times range from weeks to most of a year depending on the behaviour.
Adept
The hidden part#0304
There is no single formation period. Complexity sets the curve, and the widely quoted figure is a median with its range removed.
Thumbnails, openings and lengths converge across unrelated channels. Distribution rewards a narrow band of forms, and imitation is cheaper than experiment.
Master
The hidden part#0280
Selection needs no coordination. Distribution rewards a narrow band of forms and the rest are quietly filtered out.
The word promise activates personal obligation. The word warranty activates contractual enforcement. The coverage is the same, but the expectation of goodwill is not.
Adept
The hidden part#0487
A promise is a warranty registered as goodwill. The terms are the same; the expected flexibility is not.