By touching two objects, we can comment on their relative hotness or coldness.
You are given two cup of coffees. You can determine which one is hotter just by touching it. But is sense of touch reliable measure of hotness and coldness?
Our sense of touch is reliable to measure hotness or coldness of a body.
In this chapter it is explained that we are actually not touching anything only the atoms start repeling each other. So why do we feel that the object is hot or cold?