Your argument reminds me of the security industry's maxim that "No security is better than bad security." If you think you are protected (from threats or from b

Your argument reminds me of the security industry's maxim that "No security is better than bad security." If you think you are protected (from threats or from bad information) when you actually aren't, you'll exercise much less caution and be more likely to get swindled. Contrariwise, if you are aware of the weakness, you'll be more careful and thus compensate for it.