It feels like there is, or should be, a distinction between "I'm basing my analysis on this other data/analysis/etc. that I'm working from the assumption it's correct" vs. "This idea/analysis/etc. gave me a good starting point. I'm not depending on it but I want to credit it."

Thinking about what I do. There's a difference between me depending on the results of a survey and hearing a novel take on a market or whatever. In the former case, I'm dependent of the survey methodology being sound (and I'm going to trust some sources far more than others). In the latter case it's more "I never thought of things that way" but I'm going to do my own analysis.