Sorry for double-posting but I wanted to bring this up.

In Chrono Trigger, there are two instances where you are inside Guardia Castle and Lucca shows up (in 600 AD after Marle vanished, and then in 1000 AD when you are escaping the prison). But it is never explained HOW she got into tha castle. Also, on your visit to 2300 AD, when Lucca find the computer (a device that does not exist in 1000 AD), she immediately knows how to use it. Where did she get tha knowledge? The first time I used a computer, I had no idea what I was doing.