"the possibility of knowledge" is a correct and usable part of a sentence in written English.
You can use it to refer to the potential capacity for one to learn and understand information. For example, "The philosopher explored the possibility of knowledge and its implications for our society."
In book 2, in an attempt to explain how prophecies are possible in a system which denies the possibility of knowledge of future contingents, Gersonides claims that the prophet does not receive knowledge of particular future events; rather his knowledge is of a general form, and he must instantiate this knowledge with particular facts.
Hence, the possibility of knowledge can never be established with certainty.
FOOTNOTES [1] Philosophers typically take ancient skeptical arguments to challenge the possibility of knowledge.
Putnam, like most realists, also upheld the possibility of knowledge, distinguishing between knowledge and mere belief, convention, dogma, and superstition.
In this state of suspension they would neither affirm nor deny the possibility of knowledge but would remain peaceful, still waiting to see what might develop.
These philosophers have made this distinction the ground of a doubt about the existence of things and of skepticism about the possibility of knowledge of things.
Confucius suggests that we do not yet know the meaning of life, and thus we hold open the possibility of greater knowledge, of limitless if not infinite knowledge.
In the early years of knowledge acquisition research there was considerable discussion about the possibility of obtaining knowledge from experts, based on the ideas of situated cognition.
In everyday life, practically everyone is skeptical about some knowledge claims; but philosophical skeptics have doubted the possibility of any knowledge beyond that of the contents of directly felt experience.
For example, rationalists could be viewed as skeptical about the possibility of empirical knowledge while not being skeptical with regard to a priori knowledge, and empiricists could be seen as skeptical about the possibility of a priori knowledge but not so with regard to empirical knowledge.
An advantage of this position for explaining the possibility of moral knowledge is that nearly everyone who rejects global skepticism grants that knowledge of natural facts is possible.
