eli5: How can handwriting analysis be useful in solving a case? Can’t the suspect simply switch up their writing style when under scrutiny?

Question

eli5: How can handwriting analysis be useful in solving a case? Can’t the suspect simply switch up their writing style when under scrutiny?

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Answer 1

What you can do is check whether the same person rote two different documents, what you can’t do is tell anything about the person who wrote the documents. Certain letter formation is difficult to hide, unless they radically change the writing like switching to block capitals.