While unloading the dishwasher...
Lala: Look at this dish, Jen. You can't put it right up against a plate or it doesn't get clean. Do you see what I'm saying?
Lala: Juni, you know you have to really rinse the dishes before you put them in.
Me: Mom, maybe it's time to get a new dishwasher. This dishwasher is 15 years old. It's not working so well these days. Besides, the rack is starting to rust.
Joe: Yeah. I stabbed myself on a broken point of the rack the other day.
Lala: Oh, it just seems so wasteful to get a whole new dishwasher just because we need a new rack.
Me: Mom, how about we get a new dishwasher because the old dishwasher just doesn't wash dishes?
Lala mutters under her breath.
Lala: I just don't think a dishwasher can really wash dishes. It just can't do it.
What can you say to a nonbeliever like that?