(August 9, 2013 at 4:42 pm)fr0d0 Wrote: Does there need to be a physical instance of something for it to be understood?
That has nothing in particular to do with the question of evidence.
I understand alchemy - but there is no evidence that it is true.
Skepticism is not a position; it is an approach to claims.
Science is not a subject, but a method.
Science is not a subject, but a method.