Why might future navies still keep paper records?

Why would a technologically advanced military still carry paper instead of making every record electronic?

Established habits, control over physical access, quick local messages, and straightforward destruction can all give paper a continuing role.

Paper can persist because senior officers retain working habits learned decades earlier. Officers serving as admirals in the 2020s began their careers when paper was routine. A locked cabinet also requires physical access, while the science-fiction speculation here imagines a sensitive scanner reading the fine magnetic detail of electronic storage. A short handwritten note can sometimes travel more quickly than an email can be composed. Paper's vulnerability to fire or water also makes destroying sensitive records straightforward.