Mental Models: FI Math A few weeks ago, I talked about the importance of mental models to leveling up our problem-solving abilities. I came across an article in the Washington Post yesterday that happened to be about the UK coronavirus variant and its increased reproduction rate and I thought it was a perfect example for the FI Weekly. My bringing this up here isn’t necessarily about coronavirus, but the increased level of understanding we all have when we understand exponential math, the math behind the compound growth of our money, and mental models generally. The article noted that in a Facebook post,