@cary @jwz I remember when Incognito was picked as a name.
It made perfect sense at the time: short, simple to say and understand, and directly applied to the threat model most people at the time imagined: data leakage on a shared terminal at a library, Internet café, or in the home.
The term's expected meaning drifted as people began to think of the threat model being MITM observation and server-side; when Chrome came out, the story was client-side.