> If my mom does a search for something, or if I do a search for something, Google treats us exactly the same. My mom loves crafts, and I love software development. We should get completely different results.
This is actually not true. Different users do get different results, not only based on whether they are searching using their local google site or e.g. google.com, but also based on their search history.
For example, when I searched for GAC (I'm signed in with my google account), the first result I got was: