In order to interact with our world, it is necessary to believe certain things. Some fundamental beliefs need not be formally structured or even articulated. Other living things interact with the world around them, exhibiting the "belief" that those things experienced in the world are real and significant. Again, not necessarily articulated.
A flea does not necessarily think about being a flea. It simply
is a flea and acts accordingly.
In higher level animals there are behaviors that can easily be considered thinking. Creatures facing alternative choices do seem to ruminate. Unfortunately, none of these creatures can articulate their particular thoughts, so we are not privy to the process. None seem to doubt their own existence, however. They always behave as if their actions are in the context of a real world, and have a real outcome.
Humans have a capacity to think about and articulate their choices. This capacity seems to vary considerably from human to human, but they do have this capacity and act on it to varying degrees. Temperament can be a factor in defining presuppositions, and experiences can define and redefine presuppositions for many humans. It is a necessarily complex process in a relatively complex creature.
Presupposing one's actual existence seems intuitive and necessary. How that existence is perceived and how that perception develops over time is less intuitive and less necessary. We must accordingly absorb from our primary care givers certain assumptions about reality. This is by example, and also in the form of intentional instruction such as the telling of stories.
Children are deeply dependent upon their care givers. Structures of family, tribe and nation are presupposed by dependents such as children to be reliable sources of things needed. Not just physical necessities, but emotional and intellectual necessities as well. They do not consciously adopt these early presuppositions, but do so necessarily. An undeveloped and inexperienced human simply has no other choice.
For more advanced thinking and interaction it is often crucial to assume a presupposition or set of presuppositions prior to contemplation and discussion. For example, a student enters an institution of learning adopts the presupposition that the institution and its agents hold knowledge and shall transfer that knowledge to the student. This presupposition is more intuitive to small children and more intentional in students entering into higher levels of education.
Some institutions of learning require the assumption or adoption of prescribed presuppositions prior to gaining entry into the institution. This can be as informal as simply requiring some evidence of prior instruction in a similar institution. It can be as formal as signing a declaration of certain beliefs. Some institutions even require a prescribed garb or uniform to make the identification with prescribed presuppositions more obvious, and to reinforce the submission of the individual.
Some people may presuppose the fundamental nature of a set of interpretive rules. It can simply be the fabled rules set established by "common sense," or something more formal. The acceptance of this rules set as a sufficient foundation for observing and interpreting the world can be a personal world view, but is often entered into in concert with others.
Experientially, adopted presuppositions and their consequent observations can be so consistent as to appear self-evident. Hence, the individual and their associates perceiving the world through a similar set of experiences and adopting similar presuppositions may easily place themselves in judgement over other individuals with different world views. Everyone in the province recognizes these rules without even thinking. Any other way of thinking is wrong and probably evil.
Humans with a broader set of experiences will often adjust their presuppositions away from such a provincial attitude, becoming more accepting of people operating from different rules of interpretation. They are more "worldly." Not all humans have the same capacity to adapt, and many conflicts between people can be attributed to clashing presuppositions.
Presuppositions are the foundation of any world view, and editing them is frightening and often difficult. Conflict between any individual's world view and the new and expanded reality they might come to experience can be traumatic and even catastrophic. A defensive response is natural, and getting past such a response requires an act of the will. It is a matter of choosing presuppositions from which to operate.
Provincial thinking is easier. It does not require any degree of examining existing presuppositions. Existing presuppositions are
obviously the only rules of interpretation, and any other way of thinking is simply wrong. Wrong, and dangerous. Sometimes sufficiently dangerous to demand fleeing or fighting.
Strong emotions can be attached to presuppositions. Fear and anger can easily surface when presuppositions are challenged, either by changes in the environment or challenges in thinking. Strong emotions do not generally contribute to objective thought, and so a reasoned adjustment of presuppositions is a rare instance. Most changes are inherently traumatic and often the consequence of trauma.
Consider your own presuppositions. What do you believe to be fundamentally true? How did you adopt this set of rules? Have you ever experienced a radical shift in your fundamental beliefs, your presuppositions? What changes did you make in your way of thinking, and why?
Wouldn't the answers to some of these questions make great material for a blog?
I look forward to reading yours. ;-)