A "hot" deck refers to one where favorable outcomes, like high-value cards, appear more often, leading to a winning streak, while a "cold" deck is perceived as producing unfavorable results, such as low-value cards, causing losses. Players might recognize a hot or cold deck by observing streaks of wins or losses, but these perceptions are often influenced by random chance. In games like blackjack, experienced players may use card counting to track the types of cards remaining, helping to identify whether the deck is favorable. However, mathematically, each hand is independent, and outcomes are not guaranteed to follow a specific pattern.