R&D Portfolio Funnel: Stage-Gate Attrition Under a Budget

Technology development rarely advances one project at a time — organisations fund a whole cohort and expect most of it to fail along the way. This simulator renders that cohort as a swarm of instanced spheres moving down a five-ring 3D funnel — Research, Feasibility, Development, Validation, Launch — where a shared budget is split evenly across every still-active project each round and each one then rolls independently against a logistic pass probability set by its funding-per-project versus that gate's rising cost threshold. Tune the cohort size, the round budget and the review board's rigor, run gate rounds one at a time, and watch live readouts track how many projects survive to each stage, how much has been spent, and how the shrinking pool changes each survivor's odds.