4 Stroke throttle cable questions

Hi Ya'll

I have a question about 4 stroke throttle cables I'm hoping ya'll can help me with so here goes.

Could someone please give me a good answer as to why 4 strokes have 2 throttle cables?

Ok, Before you answer this lemme tell you what i already know.
I know one is an accel cable and 1 is a decel cable. Now, the decel cable is where i get a little fuzzy. Ok, So we call it a decel cable but its not a "Push / Pull" type of cable. If you tried to "Push" with this type of cable the cable would "Bunch up" in the housing but for it to be a decel cable it would have to be a push type.. A "Push / Pull" cable would be like the cable found on a PWC or boat for steering. Although it would be smaller this is still the type of cable that would be required for a push cable which would be a decel type of cable so that dont make sense. Also, Why would it even need a decel cable? Have you ever tried to turn the throttle valve on one of these? the spring is so stiff it will hurt your fingers. I asked around at my local motorcycle shop / dealer but no one knew the real answer there either (No surprise here) Can someone PLEASE shed some light on this for me?

Hey Jsantapa I REALLY REALLY appreciate the understanding on the throttle cable issue. Also, I see you are from NE Fla? Oh Yea? Where at? Im in fla also lets get together and ride sometime. Are you a member of FTR??