[1] The first visual and audible impression upon a market or client can appeal any of the five senses in order to initiate excellent chemistry between the buyer and seller.
Not necessarily an exchange of currency must be made but an official deal of trade or contract is desired from the pitching party.
Inspired by what has worked in the past from successful contributors to the art of the pitch, at least a slight modification is always required in order for it to be an authentic and most of all an effective pitch, otherwise the tone would not fit the sellers outfit and in critical situations be spotted as a fake by the candidate and in such a case defying the purpose.
Arrival of the personal computers greatly simplified flipping of the slides and the use of multimedia elements thus creating the "widespread addiction to slideware".
[6] By late 1980s Microsoft Powerpoint displaced the original market leader, Harvard Graphics, as a tool of choice for preparing and displaying the slides.
Criticisms raised argued that pitches were being requested unnecessarily often and their production being made too complex and too costly.