In: Psychology
Sense data are things that we receive from the physical world.
It’s to say that we can directly relate the object without much
difficulty, they are dependent on the mind and they have the
properties that perceptually appear to us. For example, when I see
an apple, I immediately recognize it as an apple. I don’t need to
think of the shape, colour and texture before I decide that’s an
apple.
The mind has already made a mental image of the sensory object and
that’s called the priori knowledge (the knowledge of truth). When
we witness the sensory data directly, it’s called perceptual
knowledge (knowledge of things). Both should work together to make
the process successful.
There is also another concept called knowledge by description which
means that we need to get acquainted with the objects, people etc.
For example not many of us have seen a dinosaur directly but we
have our mental images of dinosaurs which we read about and seen in
the movies, similarly we haven’t seen kings of the past and their
legacy but we still come to know about them. Whenever, we come
across the names of those kings who we learnt about or the
dinosaur, we directly get their pictures in mind.
Thank you for your question.
Please rate if you like the answer.