why 2 pilots for a single pilot certified A/C

[aerobat77]

i remember drinking a nice coffee sitting in first class on concorde while cruising at M2.00 @ Fl600 in a suit and that was with 1960's technology

you claim to be 32- so in the 60/70,s you sat there in liquid consistency between the legs of your father .

or do you mean the later concorde flights being yourself a kid/ teenie?