Welcome to BrainBox, where we give you the lowdown on our What If subjects so you can stay ahead of the field and be the best!

Because they are so useful, secret languages have been used for thousands of years. Sometimes they are just used for fun. Sometimes, however, they are used for more serious reasons.

To find out about some famous secret languages,
try our Codes section.
To learn how you can make up your own secret language,
check out our Gobbledegook section.
To see if you can understand London's very own secret language,
visit our Apples & Pears section.
To learn how our Encoder machine uses a very famous code,
have a look at Carroll's Code.