How does one ensure a research is flawless?

We just discussed few days ago that our researches are so far biased since they were based on evidences those we found using our five senses, and that most of then are with respect to findings only pertaining to earth.

Is there a way to over come these problems? Are there any books those discuss these aspects already?

discussing this at https://groups.google.com/d/topic/alt.philosophy/NEDLzNDThDk/discussion

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