Sounds like you’re trying to chart a curve of “legend decay.” Grab a spreadsheet, put age on the x‑axis, fame on the y‑axis, and add a time‑lag for when people stop mentioning them. Then fit a decay function—maybe exponential or linear. Add a trendline, color code peaks, and you’ll see the sweet spot where legends drop off. Just remember the model can only predict up to the point where human memory starts acting like a noisy dataset. If it’s still fuzzy, that’s probably because people start treating legends as myth, not data.