riffstudio's shelf
Apps
Queue and Congestion
Adjust arrivals, service time, and open servers to see why queues grow near capacity.
Map Projection Lens
Move north from the equator and watch equal ground area expand on a Mercator-like map.
Voting Systems
Change the same electorate and compare plurality, runoff, approval, and ranked-choice winners.
Tokenization Explorer
Split the same text with three clearly named toy token rules and compare the pieces.
Sampling Bias Simulator
Compare random samples with a biased doorway and watch access reshape the result.
Meeting Cost Meter
Estimate a meeting's time cost upfront or watch the rough total rise while it runs.
Friend Check-In
Shape a low-pressure message for an old friend, close friend, or someone having a hard week.
Difficult Conversation Prep
Turn facts, feelings, hopes, and one request into an editable neutral opening.
Bluff Builder
Build two believable fake answers around a surprising fact, then pass the device and vote.
Guess the Scale
Choose which object wins each surprising comparison, then reveal the numbers and source.
Probability Playground
Flip from one to one thousand coins and watch observed results settle toward expectation.