Coincidences are events that occur at the same time or in a similar way by chance, without any apparent connection. They often surprise people because they seem unlikely or unexpected. For example, two friends might randomly meet in a distant city, which can feel like a remarkable twist of fate. These occurrences can lead to interesting discussions about probability and chance. While some people attribute coincidences to luck or fate, others view them as simple statistical events. The human brain tends to seek patterns, making us more aware of coincidences when they happen, such as when we think of a song and then hear it on the radio.