This part isn't an act.
Before I ever saw this posting, I spent my nights building a prediction-market interface — for no client, no job, no reason except that markets which trade on what's true are the most interesting product surface I know.
A prediction market is a machine that pays people to be honest about the future. That idea has real stakes: better forecasts, less punditry, a price on truth. Kalshi made it legal, regulated, and consumer-grade — which is exactly the version of this future I want to help design.
Below: a live board in Kalshi's language — event contracts priced in cents, Yes and No always summing to a dollar — built from scratch for this page.
Fed cuts rates at the September meeting?
CPI above 3.0% this month?
Highest temperature in LA above 90°F this week?
Now you list one.
Market design is product design: a good contract is unambiguous, settle-able, and priced where honest money would open. Write one — the form teaches the rules as you go, and publishing puts it on the board above.
Your question appears here — make it settle-able?
The preview is the real component, not a mockup — what you publish is exactly what you saw. New listings open thin, so yours will sit at your price until traders show up.
The price is the interface.
On an exchange, one number carries the whole story. Everything else — type, motion, color — exists to make that number instantly legible and completely trustworthy.
Calm is a feature.
Markets move constantly; the UI shouldn't panic with them. Motion that soothes instead of alarms keeps people thinking clearly — which is the whole point of a prediction market.
Trust is pixel-deep.
In regulated finance, a misaligned digit erodes confidence the same way a wrong balance would. Craft isn't cosmetic here — it's the product's credibility.