The Invisible Ceiling

Why ability can’t be factored from a single life A student with perfect pitch sits in a Mandarin classroom. Perfect pitch is close to an ideal endowment for a tonal language — the four tones are pitch contours, and she can hear them cold. She studies for two years. She can read, she has the grammar, she has the vocabulary. She cannot hold a conversation, because she has never been inside one. A second student, tone-deaf by comparison, spends six months in Taipei ordering food and being misunderstood, and comes home fluent. From the outside the obvious reading is that the second student had more aptitude. In this constructed case the obvious reading is exactly backwards — and the part that should unsettle you is that you could not have known that from the transcript. That is the whole problem in one image. We read the output of a person-in-an-environment as a fact about the person. Sometimes it is. Often it can’t be — and the cases where it can’t be are not rare exceptions, they are…