Loop: Infinite Rebirth

In an endless cycle of repetition, everything is like a dark forest. The forest has its own rules: those who lose their way are lost forever, and those who meet will never meet again. How can you be sure you're not part of my cycle? And how can I be sure I'm not part of yours? How can you be sure this cycle is the last of an infinite number? And how can I be sure this cycle is the beginning of them all?