Based on what I have heard from several news sources, and news sources have a history of getting it wrong, is that the Asiana pilot in training was getting checked out for the Boing 777. He knew the autopilot was off, he turned it off himself, but he did not know that by turning off the auto-pilot, he also turned off auto-throttle. There was a reference that the Boing 777 system was different from the Airbus system.
So that brings up another discussion. The new technologies work according to the person designing them and there is no standardization in how they operate or are controlled. Back in the 50’s and 60’s, you could get into just about any car and find all the controls blindfolded. They were practically the same in every car.
Now, whether low tech or high tech, when you go from one car to another, nothing is in the same place or works the same except the basic operation of the turn signals and the brakes. I drive three vehicles on a regular basis and God help me if I ever have to hit the horn to warn another driver because the horn is different on all three vehicles. One has buttons next to the airbag, one you have to find the sweet spots near the outer edge of the airbag at the 4 and 8 o’clock positions, and the third you have to hit the airbag dead center.
The windshield wipers are different on all three too. On one, the stalk goes down, one it goes up and on the third, you twist the stalk.
But standardization can stifle progress. There should be some happy medium here.