TV
I know what I did wrong last time. It’s a mistake any deranged, half-witted computer could have made.
— Holly · Red Dwarf

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker acknowledges a previous error, then claims it was one any deranged, half-witted computer could make. The attempted explanation undermines its own reassurance through those unflattering qualifications. What begins as confidence about understanding a mistake becomes an unexpectedly damaging description of the standard being invoked.
Context reviewed