Is a Surprise Proposal a Good Idea?

I used to intern at a wedding ring company and what I learned is that couples will plan their proposal kind of because usually the girl knows what kind of ring she wants. Sometimes they'll even buy it together, but then like the proposal itself is probably a planned surprise. You just don't know like where and when yes a surprise proposal isn't ideal for anyone. For me, it's like you should know that they're gonna say yes Yeah,. But I don't know I would want them to know that you bought the ring or when you're gonna propose It's like you guys might have talked about itYou know what they like for writing these? Like my dad has like this job Which