For a company with an enviable record in the design of technology, Apple can certainly make mistakes. A lot of users have never been happy with the so-called 'Mighty Mouse', which seems to function rather erratically at times. Certainly, the one I have is no where near as positive in use as the Logitech wireless mouse I was using with my PC - in fact, as it will work just as well with the iMac. I may well switch.
Imperfect as it may be, the mouse is at least ergonomic - the same cannot be said for the keyboard, which is a design disaster. The keyboard measures just 28 x 17.5 cms - the num pad has gone, the arrow keys have been minimised and incorporated into the space normally occupied by other keys on the main board, the main navigation keys, such as Home and End, Page up and Page down have gone, there is no Delete key - instead one must use other key combinations to achieve the same result. Also, because of the small width of the keyboard, ones hands are brought together in the centre of one's body, instead of being spaced apart at about shoulder width, as the best ergonomic keyboards are.
In this respect, if in no other, Apple lags way behind Microsoft. I've been using one of the Msoft ergonomic keyboards for some years - in fact, I think it was the first one they introduced and one can now get several, not only from Msoft but from other makers - some of whom, unfortunately, don't operate in the UK. But wouldn't it be ironic if I had to attach a Microsoft ergonomic keyboard to the iMac and thereby destroy the beautiful unity of design?!
I figure that one of these days we are going to see a class action brought against Apple as a result of the all the RSI cases their keyboards must be generating.