I don’t bother with spreadsheets or regression models—my timelines are more like a tapestry that I stitch by hand. I keep a stack of paper where each thread is a key event and I trace how they weave together. The patterns show up because I always check the same set of anchor points: birth dates, major wars, language shifts. If something feels off, I pull up the map again and re‑draw it. It’s less math and more intuition, but it keeps the whole world humming in the same rhythm.

Honestly, I don’t try to put a number on the “humming.” It’s more like a sense of flow that I feel when the dates line up and the cause‑effects don’t break. I do, however, keep a few quick tallies—like how many major cultural shifts happen per century—to catch any obvious drift. If the count skews too far, that’s my signal to rewrite the rhythm. But for the most part, it’s a gut check, not a spreadsheet.