
Knowledge can be put into two broad categories, things we understand through our senses and things that just are by definition. For instance, whether or not a natural equilateral triangle exists anywhere in nature, it is defined by having three sides of equal length with internal angles summing to 180 degrees. Most other things are just what we observe and associate with other things
I’m lost ngl. There are things you can know to be true even based on perception. You know a stove is hot because it burned your hand and you felt that. You know a stove is hot also because the thermometer. Facts don’t adhere to your perception of it. The world was perceived as flat for a while but has always been a sphere even when the general consensus was a flat earth.
But you know your hand can’t randomly get hot. We know energy can neither be created or destroyed so you would have to know your hand got hot because heat (which is a type of energy) from the stove caused it. The other would go against the objective world. It would be an objective fact that the stove is hot because heat from the stove traveled to your hand and burned it.