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Litigation glossary

Monte Carlo Simulation in Litigation

Running a case thousands of times under random draws to see the full distribution of outcomes, not one guess.

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Monte Carlo simulation values a case by running it many times. Instead of plugging single best-guess numbers into a formula, you specify each uncertain input as a range or distribution, then draw random values thousands of times and record the outcome each time. The result is not one number but a distribution: the average outcome, the spread around it, and the shape of the tails where the best and worst results live. It is the natural companion to a decision tree once you accept that the inputs are uncertain.

The method's strength is that it captures uncertainty and interaction that point estimates hide. A case might have a comfortable average value but a fat left tail where a small chance of a catastrophic verdict dominates the real risk. Monte Carlo surfaces that tail directly, and it lets correlated inputs move together, so you are not pretending that every uncertain factor is independent. The output is a picture of what could happen, expressed in probabilities you can act on.

Its honesty depends entirely on its inputs: garbage distributions produce a confident-looking garbage histogram, so the ranges must reflect real judgment. Juricratic runs these simulations under an explicit seed so every run is reproducible and auditable, and it presents the spread rather than collapsing it to a single figure. That keeps a simulation what it is meant to be, a structured exploration of possibility, not a dressed-up prediction.

In litigation

How it actually shows up

Litigation teams and funders use Monte Carlo analysis to set reserves that account for tail risk, to price a portfolio of cases, and to show a client the full range of outcomes rather than a single point. It is especially useful where damages are wide-ranging or where several uncertain events compound. Presenting a distribution, with its percentiles, tends to lead to more disciplined settlement decisions than a single average that hides the downside.

Questions
What is Monte Carlo simulation in litigation?
It is a method that values a case by running it thousands of times. Each uncertain input is defined as a range or distribution, random values are drawn repeatedly, and the outcome is recorded each time. The result is a full distribution of possible outcomes, including the tails, rather than a single point estimate.
How is Monte Carlo different from a decision tree?
A decision tree uses fixed probabilities and values at each branch to produce an expected value. Monte Carlo treats those inputs as uncertain distributions and samples them many times, yielding a full range of outcomes rather than one number. The two are complementary: the tree gives structure, and the simulation shows the spread around it.
Does Monte Carlo simulation predict who will win?
No. It maps the range of outcomes implied by the assumptions you supply and shows how likely each region of that range is. It cannot tell you the verdict, and its output is only as sound as its inputs. Treat it as a structured exploration of possibility and a decision aid, not a prediction of the result.

This page is an educational explainer, not legal advice, and creates no attorney–client relationship. Juricratic is a simulation engine: every probability-like figure is a dial you set, not a calibrated prediction. Verify every rule, deadline, and figure against the authorities and orders that govern your matter.

Turn the concept into a modeled matter.

Juricratic makes every one of these ideas a live dial: model your case as a solvable game, then watch the optimal line and the settlement window move as the assumptions do.

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simulation, not prediction — not legal advice