Andy Ihnatko:

'We decided not to include that in the product.'

'Why?'

'Because in our vision of the future, that feature will one day be unnecessary.'

No, no, no.

When you’re trying to sell me something and I ask you why your expensive product can’t do something that I (and most people, I think) would expect it to do, don’t sigh and tent your fingers and start spouting design philosophy. That’s just arrogance. Tell me why this decision makes your product better. Tell me how it adds value. Tell me how this decision makes my life better.

If you can’t do any of those things, then you admit that you have no answer.

Andy is talking about Apple's view on eliminating VGA ports and John Gruber's criticism of PC manufacturers including VGA ports in their machines.

Great advice for nearly every business...not just tech companies. If you make a decision that disrupts how people have traditionally used your offering, you'd better have a very good reason for it.