Ok this is what I don’t understand about this flight. I get that the captains airspeed indicator was faulty due to blockage in the pitot tube. But the aircraft reached V1 takeoff speed from the copilots instrument panel which proves his data was correct. Furthermore when the Mach Airspeed trim warning appeared, the copilots airspeed was indicated at 250 mph which proves his instruments were correct as well. How could you make such a blunder? All of the data proved which one was correct the whole time.