In the absence of any experts, I'm going to have a crack at answering my own question, and maybe some of the readers wish to comment and/or learn from it, or challenge my interpretation?
When we read a sentence we usually have to draw from experience to understand its proposition/meaning. If I say, "The sky is blue"...unless as a child it was drummed into you by your parents pointing at the colour blue and banging on in your ear, "Blue", "Blue"...you wouldn't understand the meaning? Therefore a proposition only has meaning if verifiable, based on life's experiences.
Back to my original query made up of a sentence and a word. "Profitable business. Guaranteed". Its a business slogan of XYZ Pty Ltd that markets businesses for sale on a website. Take the first sentence "Profitable business". Our mind attempts to verify it drawing on past experience or you look up a dictionary. Profitable means more money comes in than goes out. Business is a commercial activity of buying and selling. Our mind tries to put the two words together and come up with an answer: "A commercial activity that makes more money than it spends". Nearly there methinks...but hang on, what business are we talking about here? XYZ Pty Ltd or the business it's currently marketing? Can't be verified as there's no qualification present? So the words mean NOTHING as they specifically relate to who knows what business?
So we've got a text string that means NOTHING end of sentence, followed by the word Guaranteed fullstop. Concatenate the two, and you get "NOTHING verifiable & Guaranteed" = NOTHING! It's meaningless in a legal sense probably, but to the untrained eye it can mean any number of other things. It's a smoke and mirrors marketing trick in my opinion, that plays on peoples lack of verifiable knowledge. If the fullstop wasn't there, would it make any difference? The meaning would be, "NOTHING verifiable guaranteed" now = NOTHING
A: The fullstop is of no consequence, it's the premise of the sentence and word that is unspecified, leaving the consumer to think they know what it means to their own detriment.