It could be a sign that an opponent is trying to finish a run or set in a certain category if you observe them routinely selecting cards from the discard pile that match a specific suit or 567 slots 13rank. Insights into your opponents' confidence levels and tactics can also be gained by watching their responses & playing styles. While some players might take a more conservative stance, others might take a more aggressive one. You can take advantage of flaws in your opponents' gameplay and set yourself up for success by modifying your approach in light of these findings.