@Aldnoah physics is about curiosity! You need to know what you want to search for, what phenomenon you can imagine, combinations, influences, processes. But as always the themes may not be interesting to you. As for me I do not like business metrics for now. But I like physics processes that can help me imagine new things about large interecting structures/agents etc. Lets put it different. With all the metrics in place. Amazon has not yet confinced me to go shopping with them. That is what I find interesting about a possible phenomena in DS. The grey, messy areas.