What you are talking about?

Not that your comment was anywhere on point or coherent.

Just exactly what about “bias” has John (assuming that you mean John Lentini) been trying to get into 921 for years without success?

Here is what John has been able to get into 921 about bias:

4.3.7 Avoid Presumption. Until data have been collected, no
specific hypothesis can be reasonably formed or tested. All investigations
of fire and explosion incidents should be approached
by the investigator without presumption as to origin, ignition sequence,
cause, fire spread, or responsibility for the incident until
the use of scientific method has yielded testable hypotheses,
which cannot be disproved by rigorous testing.

4.3.8 Expectation Bias. Expectation bias is a well-established
phenomenon that occurs in scientific analysis when investigator(
s) reach a premature conclusion without having examined
or considered all of the relevant data. Instead of collecting
and examining all of the data in a logical and unbiased
manner to reach a scientifically reliable conclusion, the investigator(
s) uses the premature determination to dictate investigative
processes, analyses, and, ultimately, conclusions, in a
way that is not scientifically valid. The introduction of expectation
bias into the investigation results in the use of only that
data that supports this previously formed conclusion and often
results in the misinterpretation and/or the discarding of
data that does not support the original opinion. Investigators
are strongly cautioned to avoid expectation bias through
proper use of the scientific method.

4.3.9* Confirmation Bias. Different hypotheses may be compatible
with the same data. When using the scientific method,
testing of hypotheses should be designed to disprove the hypothesis.
Confirmation bias occurs when the investigator instead
tries to prove the hypothesis. This can result in failure to
consider alternate hypotheses. A hypothesis can be said to be
valid only when rigorous testing has failed to disprove the hypothesis.

Pat Kennedy, CFEI, CFPS, MIFireE
Fire and Explosion Analyst
Sarasota, Florida
[www.kennedy-fire.com]