In life, you don’t need to know the answers to all the questions. But don’t try to lie that you do.
Anyone worth partnering with can spot an amateur liar.
Professional liars have a tell. They always need to find a new person to fool because the people they’ve duped in the past don’t want to work with them again. This is why a professional liar almost never succeeds on a large scale.
If you don’t know, just say you don’t know and you’ll figure it out. Don’t fake it till you make it. Work until you get it.