Well it is an interesting argument to make that HIV is not the cause of AIDs.
Here's where I think there is evidence against his argument. The Nairobi prostitutes who have gained a resistance to HIV have prevented them from getting AIDs. Their immune systems actually knock out the virus completely. So clearly HIV is necessary for AIDs.
And because of this fact, here's the way I look at it. Certainly HIV is A cause of AIDs. That is it IS associated with every case, and its not like there has been any case of someone having AIDs before HIV infection. So I think the real argument/question is if HIV is the SOLE cause of AIDs. Perhaps it takes more than the HIV virus alone.
The nairobi prostitutes could not discount this second line of inquiry as their immune systems may also knock out the other viruses or bacteria that in combination create AIDs.
I do question the profitability of science getting detoured in searching for "yet another factor". If it is true then there could be benefits (if it is easier to knock out than the HIV factor). But clearly (as the prostitutes have shown) if you knock out HIV that will be enough, so why not concentrate on that first?
holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)