I'm not convinced that slow thinking is related to the ability to respond quickly in a conversation, or that people that come up with seemingly deep thoughts in a discussion are fast thinkers.
At the beginning of my career, I have often admired how some of my (freelance consulting) colleagues handle discussions with clients, how they seem to have profound answers to any doubt or question. Over the years I came to realise that most of the questions that come up in such situations are similar and repeating. The difference between those colleagues and me is experience and that they have been in similar situations many more times before.
Sure, some have more talent and social abilities, but I believe it all comes down to practice and has much less to do with pure "thinking strengths or quickness".
At the beginning of my career, I have often admired how some of my (freelance consulting) colleagues handle discussions with clients, how they seem to have profound answers to any doubt or question. Over the years I came to realise that most of the questions that come up in such situations are similar and repeating. The difference between those colleagues and me is experience and that they have been in similar situations many more times before.
Sure, some have more talent and social abilities, but I believe it all comes down to practice and has much less to do with pure "thinking strengths or quickness".