What we know

I had a thought pop up into my mind after I read a phrase in the text "Evolution of civilizations" by Carroll Quigley.

This paragraph in particular.

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Thus scientific theories must be recognized as hypotheses and as subjective human creations no matter how long they remain unrefuted. Failure to recognize this helped to kill ancient science in the days of the Greeks. At that time the chief enemies of science were the rationalists. These men, with all the prestige of Pythagoras and Plato behind them, argued that the human senses are not dependable but are erroneous and misleading and that, accordingly, the truth must be sought without using the senses and observation, and by the use of reason and logic alone.

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Everything we know of we've attained through observation and inference. All new knowledge is derived from what we've perceived, we do not invent knowledge, we discover it.

Your world is limited to what you've perceived and derived from your perceptions.