In my halcyon career days some little while ago and before I became a drain on the resources of the State as a poorly pensioner, from time to time I gave Powerpoint presentations on any matter folks were prepared to pay to listen to.  Before that they would have been with acetate window slides. (Ask your grandmother).

The structure of the talks was foolproof and never changing.   It was “Tell ’em what you’re gonna tell ‘em, tell ‘em and tell ‘em you’ve told ‘em”.  And it applied to every situation.

On one occasion I was invited to give a talk on “How to Give a Presentation”.

Naturally I introduced it by telling ‘em what I was gonna tell ‘em which was to tell ‘em what they were gonna tell ‘em, tell ‘em and tell ‘em they’d told ‘em.  Then I’d move on to the main body of the talk which was to tell ‘em to tell ‘em what you’re gonna tell ‘em, tell ‘em and then tell ‘em you’ve told ‘em before finally moving on to the ending where I told ‘em what I’d told ‘em which was to tell ‘em what you’re gonna tell ‘em, tell ‘em and then tell ‘em you’ve told ‘em.

Never fails.

“Ker-ching”