There are some problems in philosophy; as an explanation of the physical world on which each philosopher has a different point of view. “The Problems of Philosophy” by Bertrand Russell and “What Can I Know?” by Phillip. they represent two different perspectives to consider to discover the relationship between appearance and reality. The difference is because Russell argues that we are never aware of physical objects, it is the sensory data that is perceived by us, while Phillip argues that all we need is to focus on the physical objects; no sensible data. Consequently, both philosophers focus on the sense data theory and try to convince the reader of their theory. However I found Russell to be professional, precise and consistent in his sense data theory because he gives us some good examples, scientific laws that make his argument much stronger. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay. Russell argues that apparent knowledge obtained through direct knowledge of physical objects may be wrong because reality cannot be obtained through immediate experience. He tries to explain this statement by citing the example of a wooden table which he found smooth, brown, hard and shiny in the immediate experience when entering the room. Anyone would be satisfied with this description of the table at first, if when trying to be precise in the description contradictions begin to arise. For example, if you go to molecular and atomic level table description like; a measurement in physical sciences such as chemistry and physics, all physical properties such as stiffness, stiffness, flat surface and color are changed, and it is the reality of a physical object that can be obtained through keen observation, but for a person normal is not not so important as such for a philosopher or a painter. Russell states that “the 'real' form is not what we see; it is something that can be deduced from what we see”. It is experience with physical objects that would allow one to make real descriptions from apparent observation, and the appearance of an object continues to change with space and time. Later, he coined the term “sense data” to state the knowledge that can be obtained through sensations such as color, smell, taste, and size, etc. It is a physical thing that would give rise to the generation of sense data in our mind, and the experience of a physical object during observation is sensation and the property itself is a "sense data". Therefore, sense data is not a constant property. He also argued that "the metaphysics of sense data is private" means that our sense data are not shareable with anyone in this world, i.e. everyone else except oneself has a different sensation of the observed substance. Russell is criticized for this claim by various philosophers, and Phillip is one of those, he argued that the inference one makes with sense data is a fallacy. Phillip analyzed an example table that Russell coined and raised questions about the table, such as "How would I ever know?" How do I go from my experience, from my idea of ​​a table, to the actual table?”. By stating this, he means that there are no sense data that can help us construct physical things because he argues that if one knows some property such as heat, redness, stiffness, fading, etc., then it is implied that one must have experienced that property before gave us preliminary knowledge of the physical object. Physical things cannot be built from sensory perception alone. Furthermore, Philip criticizes the statement of.