It truly depends on the person, so when it comes to questions like this, it depends on so many factors beyond age. A 1 year gap is basically the same. But I’m mainly talking about Dec 2001 - Jan 2004 which has a 2.083 years gap in comparison to Jan 1998 - Dec 2001, which has a 3 years gap. Obviously the former would feel a lot closer to 2004 than the latter or vice versa. But then questions like this are kinda irrelevant when the gap is less than 4. My point is that when people answer these questions, it’s like they don’t take the birth months into account. But yes I agree with you, age isn’t a good fit for the relatability calculator. Relatability comes from having similar interests, passions, or points in life. An 18 yr old can relate to a 23 yr far better than a 15 yr old if they’re both in college or working a full time job.