I just had to ask, "How has Google changed its search algorithm?" and that produced some interesting results, with not all of the results being about the latest

I just had to ask, "How has Google changed its search algorithm?" and that produced some interesting results, with not all of the results being about the latest change. https://www.google.com/search?q=How+has+Google+changed+its+search+algorithm https://www.google.com/search?q=How+has+Google+changed+its+s...