Bingo ?
Quoting ATSB report about Emirates weight/speeds errors on Melbourne take off (100 t error):
Incorrect weight 262.9 t : V1=143 VR=145 V2 = 154 FLEX temp = 74°
Actual weight 362.9 t : V1=149 VR = 161 V2=173 FLEX temp = 43°
In previous 2 months, pilots used 3 A340 types, weight ranging from 150 to 370 t and quoting one pilot, numbers are loosing their meaning, they become only numbers...
Still bingo ?