Try a what-if on the world economy.

GES is an interactive scenario sandbox. Pick a question — what happens if rates drop, oil spikes, a currency moves — push run, and watch the chart respond.

Open GES → or browse scenarios

Questions to start with

What if the central bank cuts rates? A surprise rate cut, how markets respond over the next hour. What if oil jumps 30%? A sudden supply shock, how it ripples across markets. What if a country defaults? A sovereign default and how the stress spreads.

What this is

GES is a small experiment. It takes real market data and a model that's honest about what it doesn't know, and turns it into something you can poke at. Pick a scenario. Watch the charts widen. Share a link if you think the answer is interesting.

Free to try. No account needed.