Useless components

I am sure most of you have used components you thought were useless, but what about a component that goal was to be truly useless?

David I is looking for useless componet ideas. He sites a few examples of past useless comonents, and offers some suggestions for new ones.

My idea for a useless component would be one that demonstrated the Heisenberg uncertainty principle.Well at least that demonstrates the common understanding of it that the activity of observing changes the observed(link to very funny comic on the subject). So every time you read a property it changes what it is by an amount.

That in and of itself doesn’t really describe any functionality of a component. If you just had a component with propery that's value changed everytime you read it then it would esentially be a random number generator, which would be usefull.

Maybe you might make some sort of DataSet component that does that.So just reading the values out of the DataSet changes the values stored in the table. I guess we could call it the Heisenberg uncertainty dataset™.

I think that would be truly useless, or at least very anoying!