 Hello, logicians. Before I have you completing truth tables with values, I want to talk to you about how to actually draw the truth table. If you have one statement, P, you will include the heading row. You might have two columns with headings or might have one. And below that two rows for the truth values. If you have two statements, let's call them statement P and statement Q, then you will have the row with headings. There might be several columns like that. And below each heading, you're going to have four rows for truth values. The reason for that being P and Q could both be true, they could both be false, one could be true, one could be false. So, with two statements, you will always have two column two, I'm sorry, four rows. So, let me recap that again. One statement gives you two rows. Two statements, you have four rows. In your homework, we'll work on these in class, you'll have three statements a couple of times. With three statements, you have eight rows. But mostly you'll have one statement with two rows or two statements with four rows.