A blank slide, a triumph
The puzzle
His slide went blank in the middle of the talk.
The room fell silent.
The talk was a huge success.
See the answer (spoiler)
Spoilers from here on. If you want to work it out yourself, leave this folded and move on.
Answer
The blank slide was deliberate.
He left the last one empty and said: everything after this is the future you build.
The silence was the room taking it in, and the applause came a second later.
