Perhaps of more importance might be the result of a younger guy in command of a B747 with little experience...and not paying attention to details.
Example.
Circa 1977, ex MEL, SQ service, MEL-SIN, local Captain in charge.
The crew boards the aircraft, does preflight checks, and completes a takeoff briefing, departing runway 34.
After engine start and pushback, the airplane is instructed to taxi to runway 27, whereupon the FD crew does as instructed, no further briefing as to the suitability of runway 27, nor the SID required.
The aircraft is cleared for takeoff on runway 27.
As this runway is rather short, said 747 rotates in the very end, drags the tail through the weeds beyond, and descends, out of sight from the tower (in the valley beyond the end of runway 27) until it is seen once again, climbing...slowly.
The aircraft proceeded to SIN at normal flight levels, and landed uneventfully, with bits and pieces firmly lodged in the extreme aft lower fuselage.
The Captain.
Suspended from duty and downgraded to First Officer, where he remained for a very long time.
His age at the time of the incident?
29, as I recall.
SQ (Capt SK 'Charlie' Chan, DFO) had a very big rethink after this very near disaster, and experienced expat Captains were recruited poste haste, including yours truly.
All above is factual, parabellum's obtuse opinions notwithstanding.