💡 expressions for conditional probabilities

to make sims more realistic probabilities should be able to change based on situation.

for example, probability of taking a shot in basketball sim should certainly take into account distance from basket.

No files, tests, or entry points are named. Start by locating the existing probability and simulation logic, then determine how situation-specific inputs such as basketball shot distance could be represented. Done means the issue's conditional-probability behavior is defined and implemented with coverage for a representative situation.

Written by the indexing model from the issue text.