Here's my WAG
This will be McCain's excuse to drop out just before the Convention so the Reich can Whip out a brand new candidate with a brand new plan to beat Obama. Obama has already shot his wad by then and it will take a couple of critical weeks to re-org his campaign.
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Baseball Caps and Sunscreen
McCain's Melanoma Cover-Uphttp://www.counterpunch.org/mckenna07102008.htmlBy BRIAN McKENNA
When John McCain airboated through the sundrenched Florida Everglades in June, he was sure to lather up with plenty of sunscreen (SPF30 is his preferred) and wear a baseball cap. For someone with his melanoma history, this was poor preventive medicine. In a UVA saturated wetland this outfit made him vulnerable for more melanomas on his face, neck, hands and other exposed areas.
In fact, the most effective preventive sunscreen is not found in an expensive six-ounce bottle, which generally offers little or no melanoma protection. It is simple avoidance of the sun between 10 a.m. and 4 p.m., proper clothing and eyewear, wide brimmed hats (four inches or more), and shady structures.
The facts are readily before us. McCain's cherished SPF-30 rating is meaningless when it comes to melanoma. The SPF rating scale applies only to ultraviolet-B radiation (290 to 320 nanometers along the sun's spectrum) which causes red sunburn and is a major contributor to the more easily curable basal and squamous cell skin cancers. The consensus of biomedical research and opinion is that melanoma is strongly related to exposure to ultraviolet radiation, type A (UVA), the long solar waves (320 to 400 nanometers along the sun's spectrum) that travel beneath the skin's surface to damage melanocytes, the pigment making cells. In other words, a SPF for melanoma would have to be: SPF=0.
And McCain's baseball cap won't do either. According to the National Cancer Institute baseball caps are insufficient sun protectors because they "do not fully protect the face, neck, and ears." The NCI is actively trying to dissuade citizens from using them in deference to big hats or draped baseball caps. :shrug: