@kennethamy,
kennethamy wrote:But, how should I decide whether to trust my senses, and my brain? Whether they are trust-worthy?
Yes, good question. How should you decide? On the basis of your past experience, right? You trusted them in the past, and they seem to be trustworthy. If you trust them, you tend to learn things, and you call it knowledge. If you don't trust them, you tend to doubt things, and you don't call it knowledge.
I think what you are trying to emphasize is a category of knowing that is regulated by what we might call discrimination or analytical thinking. You don't
always trust your senses and your reason. You have learned over the years to discriminate between trustworthy and untrustworthy sense perception, trustworthy and untrustworthy reasoning.
Is that the issue? That if we bring analytical reasoning into the process, you would argue that the subsequent knowledge is fundamentally a product of analytical thinking, and thus it is not fundamentally a product of faith in something?
I can't accept that, but, if that is your point, then let's examine a new proposition:
Some kinds of knowledge are the products of sexual intercourse. The mom is always Faith. But sometimes, there is also a dad, Analytical Reasoning.