A probabilistic view of our universe

It is important to admit that nobody can have a 100% certainty about anything. If somebody pretend to have it for his/her answer to some question, then this is for me an intellectual dead end.
Let me explain this last point with a parallel with somebody walking along a path going up a mountain. At each step we see another part of the landscape and walking further we can bit by bit figure out how the valley and the mountain looks. If we arrive at the end of the path, may be on the top of the mountain, then we cannot continue anymore, and our view of the landscape cannot deliver any new information. We cannot improve anymore our knowledge of the geografic situation in which we are.
This is what happens when we think to have found a 100% complete result: we do not have to look any further, because there is nothing more to add to the knowledge we have. Thus we do not seek any more, and this is what I call an intellectual dead end.
In my view it is better to speak about the probability that some idea can be the answer to a question. Of course, in everyday life we deal with mostly one hunded procent certainty, but this change as soon that we ask ourself bigger questions, like the meaning of life.
The scientific research is always a long way along the path of knowledge, in which we can improve our model of the universe. It is and will always be just a "model", which will never be completely finished.
The same apply to perception (and also understanding) of our environment: our brain build a model of the surrounding using the information delivered by our sensors and the information stored in our brain's memory.
Thus everything has a certain probability of being correct, but it has also mistakes embedded, which may be we are not aware of.

From this point of view we should learn to be humble and respectful toward other opinions.