Counterintuitive Facts (100): By the Time You Finish This Article, You're No Longer Who You Were

I. Congratulations. You finished the last article of this column. Or rather. You finished the first article of this column. Because the you now and the you 100 articles ago are already two different people.

II. You thought you just gained some knowledge (Information). No. Knowledge is irreversible. Once you know something, you can't "unknow" it. Your brain structure was physically changed. New neural connections formed. Old ones strengthened or weakened. Information changed your hardware. You're not the same person anymore.

III. Once you know "speed of light limit," you can never comfortably live in a Newtonian absolute spacetime anymore. Once you know "free will is illusion," you can never examine your regrets the same way.