You can simulate this pretty well by imagining the conversation - or showing (or preparing to show) the instructions. The same thing happens in film editing, and Walter Murch (Apocalypse Now, The Unbearable Lightness of Being, The English Patient) talks about it in In the Blink of an Eye:

The most helpful thing of all is simply learning how you feel when the film is being shown to 600 people who have never seen it before. Emotionally, it seems like some big hand has come and grabbed you by the hair, picked you up, and put you down ninety degrees to one side. And you think, “Oh God, look at that” It’s as if up to this moment you have been constructing a building but always standing in front of it to evaluate it. Now all of a sudden you are looking at the side of the building and seeing things you seem to have never seen before.