I’m not the expert, but I’m gonna guess that most guys will say, “they just do”.
That said, I find that sometimes I get a box that burns great ROTT, and I force myself to save some back, then later I try them and wonder where the magic went... for example, FEB 18 PLPC that arrived late 2019. 5-7 years is the magic number for PLPC? No way - I burned through that box in under 2 months. And many will tell you that SLR Regios are better when they’re young - myself included. But yes, I frequently smoke something ROTT and say to myself, “these aren’t ready yet” and jot down the box and date so I can come back to them later. It’s hard to say what exactly it is that makes them “not ready yet”, but if you smoke a $10 stick and say to yourself “this is not what I expect for a $10 stick”, then there’s a good chance it’s just “not ready yet”