Philosophically, the distinction between "determined by" and "can be reduced to" is related to the idea of determinism versus reductionism.

Determinism is the philosophical belief that all events, including human actions, are determined by previous causes and conditions, and thus are inevitable. In this context, "determined by" refers to the idea that the outcome of a certain event is fixed based on certain conditions or causes.

Reductionism, on the other hand, is the idea that complex phenomena can be explained in terms of simpler, more fundamental components. In this context, "can be reduced to" refers to the idea that a complex problem or concept can be simplified and understood in terms of its basic building blocks.

Semantically, the difference between "determined by" and "can be reduced to" is that "determined by" implies a fixed outcome, while "can be reduced to" implies a potential for simplification.

In conclusion, "determined by" and "can be reduced to" represent different philosophical and semantic perspectives on the nature of causality and the relationship between complexity and simplicity in the world. /ChatGPT