https://pbs.twimg.com/media/FffvEX5UAAAysZC?format=jpg&name=...
Then, you learn that the conventional wisdom is wrong.
Finally, you learn that you didn't actually learn the conventional wisdom the first time around, typically by rediscovering it yourself.
https://pbs.twimg.com/media/FffvEX5UAAAysZC?format=jpg&name=...