I'm gonna go home and fuck my monkey...
This reminds of something I had to post about HIV to clear up the misunderstanding.
It is predicted that with the expanding human population and the further and further invasion of the human species in remote areas, we are going to see many new diseases appear. The reason is that there are many microorganisms that are potentially pathogenic for us, but normally would never come in contact with the human population. These are not pathogens evolved to invade us and this means that they have the potential to be extremely destructive once they do it, because basic evolutionary theory tells us that with time the host and the parasite evolve mechanisms to contain each other, with the end result being an attenuated form of the disease. This happens for two reasons - first, the host immune system evolves and adapts, and second - a pathogen that kills its host very quickly, does no do anything good to itself either because it also dies and can not spread, that's why more attenuated versions of it are selected for by natural selection. A very good example is syphilis, which used to be a lethal disease which caused terrible destruction of tissues like this:
and much worse (there are no pictures from the 17th century unfortunately), but is now much milder and generally curable.
Indeed, we have seen exactly that pattern of new diseases appearing. Again, a very good example, is Buruli's ulcer:
Buruli's ulcer is caused by Mycobacterium ulcerans, which is a bacteria that lives in stagnant water in the tropics and secrets compounds called mycolactons that cause cells to die and that's why you see the necrotic lesions on the pictures. Now this bacteria very rarely contacted humans, but with the development of irrigation methods in Western Africa and the expansion of agriculture, it became a serious problem.
That's the way it happened with HIV too. The small and isolated human populations in Africa prior to the 20th century would not permit the spread of the infection because it would either not be transmitted to humans to begin with (I don't know how many people were fucking with monkey in the 19th century, apparently some were, but I am ready to bet that if you do some statistics of such an event happening with parameters such as population size, religion (it is common in Muslim societies to fuck animals because you can't afford to buy a bride until you're 40-45), influence from Western society, etc., the chance will increase a lot with each of these factors being present). or it would have been contained in the population, because normally the small tribal populations would not mix and the tribe having AIDS would eventually die
Still, the disease did not spread until the roads, the trucks and the prostitutes conquered the jungle.
Now, compare this model with the alternative hypothesis (that the government designed the virus in order to control population size)
In order for that to be true, they needed to know a lot of things in the 70s that were only discovered in the 80s, 90s, and even just a few years ago (for example the interactions of the virus with the RNAi system of cells and the many others I listed in a previous post). Of course, you can always claim that the military scientists know so much more than regular scientists, but this nothing more than making up things ad hoc, rather than coming up with serious explanations, because here we're talking about enormous advances in our understanding of cell and molecular biology.
And even if you don't agree with these arguments, I've saved the killer one for the end: if you're going to design a virus in order to kill large numbers of people from specific groups and you have all the knowledge and expertise you need, what would you do? Well, the last thing I would do is to make a virus that takes years to decades to even develop a disease, is very difficult to transmit (because a virus that dies within minutes when exposed to open air is not a virus that spreads efficiently) and infects everybody (with few exceptions). Such a virus does not do the job and it hasn't done it in the 25 years since it was discovered