Gambling with Secrets: Part 3/8 (Probability Theory & Randomness)

Art Of The Problem
Jan 13, 2012
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Cardano's Probability Space: Counting Outcomes

Probability Cardano ProbabilitySpace Gambling

Gerolamo Cardano developed probability space methodology for gambling by recognizing that dice unpredictability stems from unknown initial conditions like exact speed, position, and direction rather than supernatural forces.

Dice Probability: Single and Multiple Rolls

Probability Dice SampleSpace Calculation

Cardano calculated dice probabilities by applying his probability space framework to single die rolls showing one-sixth chance for any specific number, then extending the method to multiple dice revealing pair probabilities.

Frequency Stability: Detecting True Randomness

FrequencyStability Randomness SequenceAnalysis StatisticalTests

Mathematicians distinguish truly random sequences from human-generated imitations by analyzing frequency stability, which measures whether all subsequence patterns appear with equal likelihood across extended observations.

Human Randomness Generation Failure

CognitiveBias Randomness PatternPerception HumanLimitations

Humans systematically fail to generate random-appearing sequences when asked to simulate coin flips without actual randomness sources, unconsciously favoring certain patterns while avoiding others that seem less random despite equal mathematical probability.

Pascal and Fermat: Random Sequence Properties

Pascal Fermat RandomSequences ProbabilityTheory

Blaise Pascal and Pierre de Fermat refined Cardano’s probability ideas through correspondence analyzing sequences of random events like multiple coin flips, shifting focus from single outcomes to extended random processes.

Sample Space Multiplication: Compound Events

SampleSpace Multiplication Combinatorics Probability

Mathematicians calculate compound event sample spaces by multiplying individual outcome quantities, with three dice producing 216 total possibilities through six times six times six combinations.