"Thanks for telling me about that launch control idea you were studying. But, look, I'm a bit mixed up on one thing. You mentioned (1) critical events, (2) control events, and (3) tracking variables. You say you have to list all three things? Isn't one event likely to be on all three lists? For example, take awareness of the new product's key determinant attribute. Not getting it is a critical event, selecting it for control makes it a control event, and tracking it makes it a tracking variable. Right? Help!"