Giving a presentation is hard enough even at the best of times, let alone when something goes wrong. Most of us in the corporate world have been privy to at least one train wreck of a presentation, most likely cringing out of sympathy for the speaker.

To become a great presenter requires years of practice, however as with so many art-forms, there is an innumerable number of scientific principles that govern them. Below is a list of fundamental rules you need to understand about presenting.