1) You can know about your DNA and your upbringing.

I actually don't know much about how my DNA and which kind of mutations I have that aren't typical and how those effect my decision making. There are tons of experiences I had in my childhood that I don't remember and that influenced me.

Suppose that you are in the Trueman Show and a clone of you will be put through the same script. Even if we don't know about the spesifics of how it compiles I think we are pretty sure the results would be similar to the degree that we can get the DNA / upbringing to match exactly.

Given that the brain is a complex system chaos theory suggests that slight derivations are enough to change outcomes. Having the same script won't be enough.

2) If you can reliably answer hypotheticals about your actions then you do know how you function. However unreasonable levels of honesty would be required. In this sense you are sure.

Humans often don't act in the way they think they would act.

If you are highly reflective you can be aware of large part of your thoughts (ie you can meditate).

Being aware of your thoughts doesn't mean that you are aware of emotional conditioning. If you feel averse towards a woman because you had a very unpleasant experience with another woman who wore the same perfume, that not something you can identify on the level of thoughts.

It takes a high awareness to even know that there something that's triggering you.