Atheism the unscientific belief (part one, two, and three)

[robvalue]

As soon as the theory is put into practice and the practice works perfectly then we know that the findings are correct.   
For working perfectly i mean work in a way that lead to solutions.
These solutions should not be understood as progress as progress doesn't exist within the physical arena. 

OK. So if we put them into practice and they seem to be working, how do we know we're not making a mistake somehow? How do we know we're interpreting things correctly?

C'mon now, we're so close! How can we be sure we've removed our own bias, mistakes or even incompetence from the conclusion we think we've drawn?