without computer
Beside, do you know a single large transport aircraft which is built without a flight computer today? More likely, the biggest issue is that you don't have a clue about what you are talking about.
So? What difference does that make for actually being in charge of an airplane? Stick and rudder guys fly the 777 and are amazed. The 777 behaves like a big airplane, it doesn't turn real nifty but just try to knock it out of the air.