The thing is, for several yrs, i have watched this type of thing working in my life. It's a tug of war for me between positive thinking/attracting the positive and abundance and negative/self destructive thoughts and attracting negative. It's about undoing the negative programs that were instilled (thank the wt for that word) into me, not just from the wt, but also from my parents. Comparing my own life w those of my sisters and brothers, i must say that i have done better.
Anyway, this thing works through the subconscious. We (or other people, media, or whatever) program our subconscious w expectations. People around us subconsciously pick up on our expectations and endeavor to deliver to fulfill our expectations. Of course the reciprocal is at work too, ie, they have their desires which we endevor to meet, to an extent.
All the aids in africa doesn't make the principle. First of all, africa is a place of a lot of negativity, ie, bad is what is popularly expected, and so they get it and do it. If more people thought positive, they would do positive things and attract positive.
S