Before entering any position, I run three scenarios: bull case, base case, bear case. Multiply each by its probability. Sum the results. If the EV is negative, don't enter. This sounds simple. In practice, when you're looking at a live chart with a position about to move, you skip it. I built a Claude Code skill to make the calculation automatic and honest. What the EV Calculator does You give it a position description in plain language. It generates three scenarios with probability-weighted outcomes and returns a go/no-go with the expected value calculation shown.…