Build a PERT chart: optimistic/most likely/pessimistic estimates, expected time calculation, and a diagram in Mermaid or Draw.io format.What you get O/M/P estimates per task Expected time calculated with the PERT formula Diagram source in Mermaid or Draw.io format Three-Point Estimation Guide Before anything goes into the chart, the prompt walks you through getting estimates you can rely on and turns them into dates you can commit to. Better estimates: rules for optimistic, most likely and pessimistic values, and the common estimation traps it flags Full PERT math: expected time, standard deviation, forward and backward pass, slack and the critical path Odds of hitting a date: probability of finishing by your target date and a 90% confidence date to commit to Honest limits: it flags near-critical paths and says when the probability is likely too optimistic