My daughter has just written her bachelor thesis. For that, she had to compare a bunch of papers and studies about a number of sub-topics related to her thesis topic. For one such point, there were only two studies to be found in the world. Both from renowned scientists and universities, both looking sound regarding their methods, both having comparably large data sets, and they both came to completely opposite conclusions. After a talk with her thesis advisor, she dropped this sub-topic and the studies from her thesis.