Michael Kay: simple designs make easy things easier, difficult things more difficult

Michael Kay wrote:

> I think they made it simple deliberately, 
> knowing full well that when you keep a 
> design simple, you make easy things easier, 
> and difficult things more difficult.

That is a fascinating statement.

I am very interested in seeing concrete examples of a simple design making difficult things more difficult.

Does anyone have examples of this please?

/Roger