Thought of the moment,

My Washing Machine has a glass door so you can see your dirty clothes get cleaned, My Oven door has a window so you can see your food get burnt, you can even buy Fridges with glass doors so you can see your food get cold.

So why don't they make Dishwashers with glass doors ? What is going on behind that door they don't want us to see ?

Is it anything to do with the adverts on the TV telling me I need to buy a special cleaning fluid so that my Dishwasher can clean itself ? If it can't clean itself then why should I trust it with the dishes ?

Answers about the magic elves theory on a postcard to the usual address.