[technothrasher]

> This is called observational bias.

I think you mean confirmation bias. Observer bias is similar, but relates to being non-blinded during a scientific study.

[a3w]

Confirmation bias means that you want to look for examples of proofing something, instead of seeking counterexamples. That's not it, either.

Baader-Meinhof phenomenon or Frequency illusion could be what we were seeking?