When you are creating a cybug, the chances are (unless you are fantastically
lucky or unadventurous) that something will not work quite as you intended.
The debug option allows you to find out exactly
what was happening in your cybug's logic, right down to the values stored
in its memory variables.
However, make sure that you turn debugging
off before you enter your creation in a tournament, because anybody
else who runs a battle with your cybug in can gain access to this information.
This would enable someone to find out exactly how your cybug works.