you know vs you knew

Some examples from the web:

• Your mother-in-law- you know about her cancer treatments.
• Which means you know more than me.
• Take some beers, you know.
• Sometimes doctors have different opinions, you know.
• So you know all about my gambling experience.
• If you know something about Alfredo...
• But you know what they say.
• - If you know about it, then you know that lidar is an optical remote sensing technology.
• Well, everywhere, you know.
• And brilliant and very... you know.
• But you know nice never wins anything.
• Then you know who's got my back.
• Some of you know Detective Essen.
• I believe you know his ex-fiancée Katie Andrews.
• And you guys, you know...
• We connect, you know, emotionally.
• Only deal with people you know.
• So now you know something others do not.
• Companies spend billions making sure you know their product.
• Be glad you know me otherwise...

Some examples from the web:

• Because you knew the time would come.
• Because you knew it was right.
• But you knew your father would disapprove.
• Because you knew his research was making progress.
• Like how you knew she was in trouble.
• Then she put the bottle back as you knew she would.
• Because you knew I'd talk you out of it.
• At the cemetery, you knew exactly who I was.
• 'Cause you knew I'd go around ranting about the evil David Leppenraub.
• You were smart; you knew there was something wrong.
• Co'lliviette, you knew I wanted to rock the peacock.
• Obviously, you knew I would be.
• Rodney, you said you knew where it was.
• And you knew about his prison visits.
• When you accepted my money, you knew what my terms were.
• But you knew he was a doctor.
• Dan, you knew my focus was fixing things for ben.
• It seemed like you knew something.
• Withholding information and you knew it.
• And you knew Henry would be terrified of a turf war.