In a code, "CAT" is written as "TAC". Kaveri thinks this clearly shows the whole word is reversed…
In a code, "CAT" is written as "TAC". Kaveri thinks this clearly shows the whole word is reversed, so she writes "DOGS" as "SGOD". Her friend says this single example cannot decide that. Who is right?
Who do you think is right? Pick one.
The answer: Her friend is right, a 3-letter example cannot tell two different rules apart
Why
Kaveri's rule does correctly explain 'CAT' becoming 'TAC' — but so does a completely different rule: 'swap only the first and last letter, leave the middle exactly where it is.' For a 3-letter word, these two rules are impossible to tell apart, because the middle letter (A) sits in the same place either way — there is no third position for the two rules to disagree about. The two rules only reveal a difference once a word is long enough to have more than one letter in the middle. Test it: apply both rules to 'DOGS' — full reversal gives 'SGOD' (D,O,G,S completely flipped), while swap-the-ends-only gives 'SOGD' (D and S swap, but O and G stay exactly where they were) — two different results from the same starting word, because 'CAT'→'TAC' never actually distinguished which rule was really being used. Her friend is right: a single 3-letter example fits more than one possible rule — recognising that more information is needed, rather than picking the first rule that happens to fit, is the actual reasoning skill here.
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