Brendan Kane warns that certainty in false beliefs makes you obsolete. Mark Twain said being sure of something wrong is dangerous. Alvin Toffler predicted the 21st century's illiterate are those who can't learn, unlearn, and relearn.
Here's how you know you're becoming obsolete. And this goes back to a timeless observation from Mark Twain who said, "It's not what you don't know that gets you into trouble. It's what you know for sure that just isn't so." What he meant is that certainty can be dangerous. People who always believe they're right struggle to see when they're wrong. They ignore any new information when it doesn't fit their beliefs. And that's when the rest of the world moves on without them. Alvin Toffler once made this brilliant prediction. He said, "The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn." And what he's arguing is that the modern world changes too quickly for static knowledge. Nothing you learned last year will get you through this year. The moment that you stop learning new things, you start becoming obsolete.
