Phrases for when you are not sure To be honest, I don't know much about this, but I think I'm not very familiar with this topic. However, I guess that I haven't really thought about this before, but from what I understand I don't have much experience with this, though it seems to me that This isn't something I know a lot about, but I'd say I'm not completely sure about this, but I believe I might be wrong, but it appears that I don't know the details, but generally speaking