all I said was computers can be made smarter and that doing so would have prevented some of the recent accidents
You will never be able to make a computer smart. You can enlarge the database a computer is working with, you can optimize algorithms, you can monitor more parameters, and yes, you can prevent some accidents that way. But by relying more on computers, you will also see additional accidents.
Let the computers do what they can do best, and allow pilots to switch them off when the "assistance" they offer does in fact not help.
If it takes an automotive company 5 years to develop and certify a lane-warning system on a car, you can bet it would take 15 years to do something similar on an aircraft.
In fact it took an automotive company to develop 50 years to make a car do what a Trident already was able to do. Get to your destination. Automatic. Even in fog so dense, no sensor can see the road markings.
The reliability of some of the modern car equipment is simply ridiculius compared to some 20 year old aircraft equipment. Autopilots crashing into turning trucks, satnav systems showing a ferry as a bridge, automatic wipers wiping in the bright sunshine, lane warning systems that want you to stay with the white marks in a construction site... It will take them at least another 15 years to reach aircraft reliability standards