This can be intentional or unintentional by either the speaker someone else. An example of an intentional use of this to change the conversation would be when someone attempts to change the conversation by pointing something out “Where did that dog come from? “ or “Hey I think I see a friend over there” or virtually anything that shifts the conversation away from what it was. On the other side, when the conversation shifts unintentionally due to environment. “What was that!?” someone might say in the middle of a conversation when something surprises them. Segues are the other time when a conversation moves from one topic to another, although this is an intentional shifts of the conversation and normally built into the conversation by the speaker. An example of this would be if a conversation was talking about a dog and the speaker said “Speaking of dogs, my dog is going to the vet for his shots tomorrow.” The conversation wasn’t about the speakers dog, but it shifted to that as a result of the segue the speaker
This can be intentional or unintentional by either the speaker someone else. An example of an intentional use of this to change the conversation would be when someone attempts to change the conversation by pointing something out “Where did that dog come from? “ or “Hey I think I see a friend over there” or virtually anything that shifts the conversation away from what it was. On the other side, when the conversation shifts unintentionally due to environment. “What was that!?” someone might say in the middle of a conversation when something surprises them. Segues are the other time when a conversation moves from one topic to another, although this is an intentional shifts of the conversation and normally built into the conversation by the speaker. An example of this would be if a conversation was talking about a dog and the speaker said “Speaking of dogs, my dog is going to the vet for his shots tomorrow.” The conversation wasn’t about the speakers dog, but it shifted to that as a result of the segue the speaker