Fuel cutoff switches on the 787 are located right below the throttles. You have to pull on the fuel switches in order to flip them on or off. Also, the captain will keep a hand on the throttles to prevent them from moving during takeoff. One of the first things they teach you in flight school is to keep a hand on the throttle during takeoff to prevent a sudden cut of fuel to the engine(s).
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Here's an airline captain explaining how they couldn't have accidentally been switched to the off position:
Air India 171 Update: Fuel Cutoff Switches in 'Cutoff' Position according to WSJ
www.youtube.com
IMO, this was an intentional act. There's no way to do this accidentally.
The only conclusion is the co-pilot committed suicide and killed everyone else in the process.
Guess who paid for this surplus?
American consumers.
These tariffs are little more than a massive tax increase on everyone but the wealthiest Americans.