I recently changed dentists (the one I’ve been seeing for years retired) and this new dentist uses the very latest in technology. One of the tools she uses is a an optical camera that allows her to show me, via a monitor in front of me, the tooth or area of my mouth to which she is referring as she explains what needs to be done. In this way I can see the same thing she is seeing and, rather than imagining what she means when she says, “I don’t like the looks of this older filling,” I can see it as well. Seeing the image on the monitor is so much more powerful than her describing what she is seeing.
It’s the same with graphics. Showing a product along with specs is certainly more powerful, and will be retained remain in the reader’s memory longer, than a written description. A process is much easier to follow when it is depicted as a flow chart rather than described. As Mike Parkinson over at 24 Hour Company has said during many a presentation, graphics, especially photos, provide realism and credibility and people retain the information much longer.
And as the saying goes, a picture is worth a thousand words. Using an optical camera my dentist let the image provide me the information I needed. Graphics will do the same within your proposal.