If you get it WRONG for example.
( A really bad example from the past and done without a simulator !)
An empty ferry to Southern Africa, weather clear, a light headwind, a long runway, touchdown in the right area and speed.
One Tyre burst
Si
x Tyres scuffed
One Main wheel and one Nose wheel in Flight Spares
Two days delay while spare tyres were ferried out on a special flight ( empty ) from UK
Repaired a/c flown empty to UK
Some 40 hours of empty flying. ( The Company lost money on this.)
The Captain PF ( LHS) had 2000 hours on type and 10000 total at a guess.
This S F/O ( RHS) had similar levels . But had failed to see/ notice or comment on where the Captains feet were.
LT