andianjul, you are not entirely "OT". What Dozy means is that, in modern times, we are lead to believe that "computers" do it better than you.
This is not always the case : any professional car racer will beat any ABS stopping distance any day.
The point with cars/automobile ABS is NOT achieving shorter stopping distances but to keep directional control of the car by preventing wheel locks.
To prevent wheel locks, the "computer" releases the brakes : it is easy to understand that braking action is lower when brakes are released.
On the other hand, a professional car racer is smart enough to keep braking to the maximum sustainable braking power without locking the wheels thus retaining braking power AND directional ability.
There is a big training issue here : drivers are not (enough) aware that ABS has been installed to keep directional control of the vehicle in order to avoid obstacles, not to get the best possible stopping distance.
The same is true with A/C "autobrake" : if pilots were smart enough to "feel" the maximum braking power they can get without locking any wheel, they would achieve shorter stopping distances (no brake releases).