From an early age, we’re taught not to judge people based on their appearances. But as humans, it’s simply in our nature to be judgmental of others, whether we’ve gotten to know them beforehand or not. This habit can sometimes get us into trouble, especially in situations where we have to go up against a person who is secretly a master in their craft. These 50 stories teach us all a very important lesson: Be careful who you decide to take on. 1. The Spreadsheet ExpertI’m kind of the Google Sheets expert at work, and I make lots of new tools for different departments to use. Enter the “new guy”…