Yup. My friend is a high school teacher, and he did the same thing to his class - told them not to use Wikipedia, but that Wikipedia sources were fine, and the kids did actual research.

Hardly a loophole - Wikipedia’s greatest strength is as an aggregator of reliable information, and using Wikipedia’s sources is how people SHOULD use it. They just taught you how to use it.

Aren’t wind turbine blades fiberglass? Can fiberglass be printed?