Your defintion of a causal system seems accurate and understandable, as are your examples. You need to add a formal definition of non-causal though, right now it's just implicit based on your example. -Ryan Scott
Your Causal System definition is easy to read and understand. I also liked how you pointed out that all memoryless systems are causal. - Max Paganini
Your definitions are easy to read and straight and to the point. In the first part I particularly liked the deduction you made about memoryless systems. In the second I liked how you pointed out that a non-causal system can also be dependent on past or present values of t. It helps make your definitions more exact and leaves out any speculation. Nice. - Phil Cannon
I thought your definitions were clear and easy to understand. Your examples also helped quite a bit. I would give you an A+, but I am not your professor. Sorry, dude. -Virgil Hsieh
I also chose causal systems. But i think you did a better job because you went a step further and defined every memoryless system as a causal system-- Monil Goklani
