perception and evidence: forum for week of 10 Oct

We all have the same fundamental beliefs like we are human, fire burns the skin, etc, which have worked for us since the beginning of time. The ones that don't or erroneous beliefs discontinue. Even if our truths aren't true to aliens or other non-human beings, it is OUR truths. These fundamental beliefs, or truths, or perceptions give us the basis for ongoing empirical experiments which make for truths. If we don't go this route then what is the point of seeking any truths? We might as well just lay around and do nothing and be in chaos. That being said, we have to be careful how far we use our perceptions in evidence and what perceptions can actually constitute evidence. How far can the deep skeptic go? Very far, but is it facilitating or debilitating to life?