Did you read the article ? Did you understand it ?
I did and I found it full of generalisations and quite verbose.
The vast majority of the content is actually common sense to anyone that has spent any time working with stone and is not particularly groundbreaking.
It wasn't well presented and was generally difficult to read (mainly due to it's layout and presentation). Break it down into categories with clear headings and give three or four real world examples of what you recommend to add some legitimacy to your opinion (which was what your presentation is, an opinion).
Seeing as there are literally thousands of natural stones in the world I picked a few of the more common types, why not just pick two and provide a real world example of what you would recommend?
The magazine style "document" posted earlier in this thread wouldn't encourage me to pay £19.50 an hr never mind £195.00 hr for the authors services.
This was the reason I posted a list of common sedimentary and metamorphic stones on which you could cast your expert eye and provide some examples. This would be considered advertising don't you think? Or maybe substantiating your opinion?
So far all I've read in your document is the following:-
Pick a suitable product for the application.
Don't believe everything that's written on the bottles that people are trying to sell you.
Have I missed any other salient points?