Variance influences a player’s session results by creating fluctuations in short-term outcomes, regardless of skill level. It leads to sessions where luck, rather than strategy, plays a dominant role, which can result in unexpected wins or losses. Over time, high variance can mask a player’s true performance, making it challenging to determine whether results are due to skill or chance. This randomness is inherent in many games, ensuring that no two sessions are alike and adding unpredictability to each outcome, despite underlying probabilities and strategies.