Human Precision asks for continuous attention. If you are tired, distracted, or mentally overloaded, it may be harder to maintain the same level of control for a long run.
Consistency matters
Fatigue does not always show up as one dramatic slow response. It can appear as inconsistent attention, delayed corrections, or a growing number of small mistakes. In an endless game, one of those mistakes eventually ends the run.
Do not over-interpret one score
A poor run after a short night of sleep does not diagnose a problem, and a strong run does not prove that you are fully alert. Hardware, practice, stress, distractions, caffeine, time of day, and random variation can all affect performance.
Use the game as a game
If you notice that your scores differ across days, that can be an interesting personal observation. It should not replace medical advice or safety decisions, especially for driving, work, or other activities where alertness matters.
Educational and recreational information only. Human Precision is not a medical, psychological, or professional assessment.