I don't think there was anything wrong with having 100 HIV/AIDS researchers on the same flight. Planes don't just drop out of the sky, flying is statistically the safest form of travel. It might seem stupid in hindsight, but that's only because you know the plane went down. This is a good example of Hindsight Bias; there was no way we could have predicted the plane was likely to crash (at least, up until they entered Ukrainian airspace).
