Can we think i.e. process the input data without relying on linguistic structures?
All knowledge between human is either spoken or written. When we see something, it contributes towards the construction of properties of the object seen. For example, when I see an image of red apple, I register an object which is an apple with a property of redness.
Now suppose a person comes and cuts the apple into two halves; I am basically witnessing the event of cutting the apple. To make any sense out of the visual, it is necessary to think (or process the input visual) that the apple has been cut. As you can see, this processing required usage of linguistic structures : cut, person, half, etc; these linguistic structures have been employed so as to be able to make a minimally acceptable sense (it is not sufficient to sense that something happened).
What about intuition? When smart people get what they call as 'intuition', is it, in first place, constructed in their mind on linguistic platform? Or its source is something undefinable; only attempts are made to convey the phenomenon/intuition/idea using language?
An equivalent question can be framed as follows: Can every possible human thought be satisfactorily communicated using a given language i.e. a set of words?