Dewey believes that new philosophical theories tend to arise not so much when earlier ones are refuted but when earlier ones become like outdated instruments that no longer meet our practical needs, T/F?

That statement is true.

Explanation:

Philosophical theories tend to become a basis for people to determine their moral value. It provides a frame that distinguish the right and the wrongs in this world.

According to Dewey, these theories can be heavily influenced with the cultural situations that the people have to face. As the culture changes, new philosophical theories might emerge as a form of adaptation to the new culture.

For example, if you examine philosophical theories in the past , let's say during the middle ages. Many philosophical theories might justify the act of killing people (through wars or duel). If you see the philosophical theories that emerge in modern day, this is very unlikely to happen.

is there a year set? the question is incomplete