LOL, welcome to the future!

It's not as bad as it sounds.

Most radios nowadays have a feature called "Dual Rates". It is usually turned on and off with a switch (Or two) on the transmitter. You usually set them up so that on "High" you have full throws and on "low" you have less sensitive control.

This is a handy feature for very areobatic planes so that when landing or taking off you don't have an overly sensitive plane.

"Expo" is short for "Exponential". This is a feature found on most computer radios and it's similar to dual rates but it doesn't have to be turned on and off.

You set the amount you want (30%, 50%, etc) and it "Softens" the control exponentially. An example would be:

Without expo, you move the stick 1/4 and the servo moves 1/4 - move the stick 1/2, the servo moves 1/2 etc

WITH expo, you move the stick 1/4 and the servo moves 1/16 - move the stick 1/2, the servo moves 1/4 - move the stick 3/4, the servo moves 5/8 move the stick to 100%, the servo moves 100%

So you still have full control, it is just "Softer" around the center of the stick travel - It's a very nice feature!

But neither of these are needed to fly!