I tried it for awhile and had to go back to google. I type in “relevant error message stackoverflow” and NO WHERE in the first three pages of results can I find the same stack overflow post that’s purple from my 20 visits over the last 5 years because I just can’t memorize everything. I google the same thing and it’s top results every time. I don’t understand search so it could easily be personalized results remembering what I looked at but it doesn’t matter. What matters is it just works and DDG didn’t.