Unit 8 · Detecting Reasoning Errors
Lauren's School Club — Necessary Condition Error
Lesson 6 of 34
About this lesson
To join the basketball team you must be 140 cm tall. Lauren grew to 141 cm. Miriam says she'll definitely be chosen. What's the mistake? The height rule is a necessary condition — it gets you through the door, but it doesn't guarantee you'll be chosen.
Chapters
Question
Lauren wants to join her school's basketball team. To qualify, players must be at least 140 centimetres tall.
Miriam: "Lauren was 139 centimetres tall last year, but she has now grown to be 141 centimetres tall. So, she will definitely be chosen to be part of the team this year."
Which one of the following sentences shows the mistake Miriam has made?
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