All information is imperfect. Methodology can dehumanize people and turn them into numbers. That which is unknown at present is not unknowable, but as yet undiscovered, anything can eventually be known in its entirety.
Scientists have a more perfect road to knowledge than do philosophers.
The results of proper scientific experiments speak for themselves. All information between human beings can be exchanged only within a play of tolerance, whether in literature, religion, politics, or science. The scientist strives to delineate man, not just sketch him. Science separates the world from our perception of it. Human error cannot be taken out of scientific observation.