I believe in steady improvement. For example, after watching the first Star Wars last month, my wife was finally on track to differentiate between C-3PO and R2-D2.
Sometimes though, improvement feels like light speed reverse. For example, after watching The Empire Strikes Back last night, my wife still cannot keep straight the name of Luke's teacher. Note: his name is "Yoda," NOT "Spock."
All hope is gone.
*the inexplicable inability of my wife's sister to differentiate between a massive weapon of the Empire (Death Star) and the Grateful Dead classic (Dark Star). They are not what I would call Star Wars aficionados.