I want to know the answer to the following question:
What previous disadvantage of Norfolk Island was seen as an advantage for holding male convicts?
All the background I'm provided with is that "However, a recent study has demonstrated, utilising a database of 6,458 Norfolk Island convicts, that the reality was somewhat different: more than half were detained at Norfolk Island without ever receiving a colonial conviction, and only 15% had been reprieved from a death sentence.". Is that enough to answer the question?