bellwether — noun — a person or thing that shows the existence or direction of a trend; index. I want to introduce a metric I use to evaluate potential employers. I have bellwethers. People that I respect and whose work interests me. I use them to gauge my potential for success at a company. I keep a mental list of folks and where they’re working. In some cases, when I start to evaluate a specific employer, I check how long they’ve been there and often ask folks who have been there a ...