"Observable data" refers to information that can be directly noticed, measured, or perceived by someone using their senses. It is data that can be seen, heard, touched, tasted, or smelled. Full definition
a casual perusal of the comments (now a large set of observable data) would indicate that anti-creationists (who presume to be the exclusive proponents of science) use assumption and ad hominem ad nausea to support their conclusions. (religion.blogs.cnn.com)
What we can do is look at the basis for the various belief systems and use the evidence available to make some determinations based on observable data. (religion.blogs.cnn.com)
The empiricists of the 1950's had claimed that science starts from publicly observable data which can be described in a pure observation - language independent of any theoretical assumptions. (religion-online.org)