/\/\ exactly...
what engineer could land a 747 in a gale force crosswind? not many
and in the mean time, what pilot could replace a 747's engine with the pressure of it flying the next day? not many
They are both jobs that require skill, rivalry between them is inevitable- just like rivarly between the drivers in F1 and their engineers are. Its not just aviation that has rivalry between those who fix and those who use the machine.