"Impossible is just a big word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it. Impossible is not a fact. It's an opinion. Impossible is not a declaration. It's a dare." - Muhammad Ali
Changing your mind should be celebrated. People call each other out over past contradictory statements like it's a big gotcha or a sign of hypocrisy and fraud. Maybe sometimes, but much more often it's a sign of growth, humility, and willingness to learn and integrate new info.