If your opponent is lying is it a valid objection to make? What are the grounds to object when he lies?

When opponents lie, use your many DISCOVERY options to prove they are lying. Objecting is a waste of time. Your word against theirs. Please study the class on discovery of evidence and the class on compelling evidence. THEN USE THEM TO PROVE THE LIES.

AND TELL EVERYONE YOU MEET THAT MY COURSE WORKS PLEASE!

Excellent. Thank you!