Bigger is not necessarily better

Sometimes one observation is enough to completely annihilate a hypothesis.

``Sometimes, one case, a sample of size one is enough''

Here's an example from Sunday (January 15th)'s chronicle:

The origin of AIDS?

Comparative study of HIV and SIV? Similarities and dissimilarities.

Questions:

• Is this an incident of the random scatter problem?
  • Observe events/ cases of an illness.
  • Find the dense areas.
  • Look for something they have in common.
  • Use that as an explanation.
  This relates to Brad's remark:
  ``There has never been a proved cancer cluster.'' Random scatter applet