> Booleans can be <i>true</i>, <i>false</i> or <i>maybe</i>. […] Technical info: Booleans are stored as one-and-a-half bits.<p>Most languages would need at least ²log(3) bits. That’s about 1.58496250072, so that cuts more than 5% in storage.<p>I guess they’re using the fact that most real-life booleans have the value <i>maybe</i>, but don’t see how to implement this.