2.1.4.4
Does knowledge come from inside or outside? Do we construct reality or do we recognize it?
2.2.1.1.1
In what ways does the biological constitution of a living organism determine, influence or limit its sense perception? If humans are sensitive only to certain ranges of stimuli, what consequences or limitations might this have for the acquisition of knowledge?
2.2.1.1.2
What possibilities for knowledge are opened to us by our senses as they are? What limitations?
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Perception is a tangled web of processes and so much of what we see, hear and touch is determined by our own expectations that it raises the question of whether we ever truly perceive what others do.
New findings help scientists make sense of our senses.
The brain can be "tricked" into thinking it's seeing any colour by adding together the right combination of just three colours: red, green and blue.
Our five senses are what help us make, well, sense of the world around us. But scientists are still discovering how they work.
How many senses do we have? What's the difference between sense and perception? How reliable is perception as a way of knowing?
Your eyes are not cameras faithfully taking pictures of absolute truth of all that surrounds you. They have filters, and your brain has to interpret the jangled mess it gets fed. Colors, shapes, and objects are not what they appear.