> You're allowed to carry and use a locking knife, but you need to ahve a good reason. 'I want to' should suffice. It's a general-purpose tool, and one oughtn

> You're allowed to carry and use a locking knife, but you need to ahve a good reason. 'I want to' should suffice. It's a general-purpose tool, and one oughtn't be required to have a specific reason to carry a general-purpose tool. This applies in the software context, e.g. to cryptography.