Two bodies at different temperature `T_(1)` and `T_(2)`. If brought in thermal contact do not mecesserily settle to the mean temperature `(T_(1)+T_(2))//2`.

Explanation

In thermal contact, heat flow from the body at higher temperature becomes equal . The final temperature can be the mean temperature `(T_(1)+T_(2))//2` only when thermal capacities of the two bodies are equal .