A table and chair are needed if you are ever to want to sit down and work. It is difficult to sit and work if you have to stand for long periods of time. Usually a desk would suffice when it comes to working on paperwork or on the computer.
If you did not have a table, you would have to sit and hold your computer on your lap. If you were writing on a piece of paper, you would have to hold the papers and something hard to bare down on and both of these things would have to be on your lap. That would make if difficult to write. If you didn’t have a table, you would have to lean over the table.
A table has a sturdy, flat top so that objects can be placed there. it had a wide surface so there is plenty of room to work. it is elevated to that someone can sit straight and use it. if it werent elevated, the person would have to hunch over, and it would be very inconvenient.
(2) a chair has a backrest for someone to lean against if they are tired. it is elevated a bit less that a table to a person can sit on the chair and use the desk while leaving room for their legs. there is a protruding platform where a person can sit. its shaped similar to the structure of a sitting human.