<p><a href="https://stats.stackexchange.com/questions/410778/how-would-someone-use-curves-as-an-input-to-a-supervised-learning-model">This post</a> about a question that came up in a test was put on hold, presumably because I am "demanding an answer". But I'm not, I clearly explained what my thinking was  and how it differed from the provided solution. I also explain why I don't understand the solution (PCA would just transform the input space, not breakdown into usable features). </p>

<p>So what am I missing here? </p>
