The lesson I’ve learned the most often in life is that you’re always going to know more in the future than you know now.

Swift frames experience as an accumulating form of knowledge: whatever you feel certain about today will be revised by what you learn tomorrow. The line carries an implicit counsel against absolutism—especially in moments of heartbreak, conflict, or self-judgment—because time and new information tend to soften, complicate, or correct present conclusions. It also suggests humility (you are not finished learning) and hope (future understanding can bring relief). In Swift’s broader public persona, the sentiment aligns with her recurring themes of retrospection and growth: looking back at earlier selves with compassion while recognizing that perspective is earned through living.