Fantastic! I wonder if anyone has researched how quickly users can find what they are looking for on different search engines, after a super quick introduction

Fantastic! I wonder if anyone has researched how quickly users can find what they are looking for on different search engines, after a super quick introduction to the basic controls. Of course, everyone has been primed by whatever search engine they have used the most, so that would have to be accounted for. A particularly common result on DDG which bugs me is whenever I'm searching for something which I'm positive will be answered on Stack Overflow the first page of results includes one Stack Overflow question and the rest of the results are from other sites. This can be annoying when the search is basically "how to convert X to Y", and the only Stack Overflow result is "how to convert Y to X". The similar results for each site shown on Google is a killer app in these situations, and is probably the main reason I "!g".