Subject to change: my advert to you?

I'm reading the book this presentation is an intro to right now, and enjoying it. Whether you therefore consider this an advert or a recommendation is now entirely up to you! It's subject to change...

From: AdaptivePath, 3 weeks ago

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As an introduction to Adaptive Path's new book, Subject to Change, this presentation covers key points from the book on creating great products and services for an uncertain world.
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Lessons in UI design. If superfluous content = spam what does misleading content equal?

See that big black button in the picture (left)? What would you expect to happen when you press it?
'Get my change' would be a reasonable answer to that question.
Look, even the little diagram shows where to put your pennies, then which button to 'press for ticket' and then where to look for your ticket to be dispensed.
And the final step in the diagram leads you to that big black button, with its illustration of change being dispensed.
Neat UI.
Except, that in very tiny writing somewhere on this picture are the words 'no change given' (too small to spot at this scale).

Redundant.
Misleading.
Spam.
Lies.
Please remove.