Overheard two colleagues arguing about whether to negotiate their salaries at review time. One said "I don't want to seem greedy," and the other countered with "You're leaving money on the table." Neither had actually calculated what they were worth in the market. That's the problem—emotion without data leads to random outcomes.
I spent thirty minutes this morning comparing three job postings for roles similar to mine. Same industry, same city, similar requirements. The salary ranges overlapped by maybe 60%, but the top end of one posting was 18% higher than where I currently sit. That's not a small gap. It's not devastating either, but it's real money over a year, and compounding money over a career.
Here's what I should have asked myself a year ago: