Does your bias only indicate lack of objectivity or any other direction it lies in? Sure, we tend to be biased in such a way as to favor ourselves or favor those who are like us, but we don’t have to be.

Why did I use very slight degree of bias during this observation? If I had to pick one word, maybe counterbiased. If that’s too “newly coined” for you, then maybe unexpectedly biased or counterintuitively biased or against his own interest.

Does your bias only indicate lack of objectivity or any other direction it lies in? Sure, we tend to be biased in such a way as to favor ourselves or favor those who are like us, but we don’t have to be.

Why did I use very slight degree of bias during this observation? If I had to pick one word, maybe counterbiased. If that’s too “newly coined” for you, then maybe unexpectedly biased or counterintuitively biased or against his own interest.

Well, it’s kind of a mouthful to say, but the clinical term is expectorate (definition from Merriam-Webster).

What I was taught in school was that it’s acceptable to not include the comma in joining very short independent clauses. What is “short enough” is a judgment call?

If a comma does make a picture clearer if I should use it, why should I use it too? (a) I think to put the number in, and (b) whenever the comma makes things clearer, by all means it should be used.

According to your particular case, your second independent clause is short enough that you could get away with omitting the comma. (I would include it, though.)