Sorry for the thread creep in advance.
"As first officer you do pretty much the same as the captain except you can't taxi on the runway.
PPL / SLF here, 'scuse my ignorance, but why not ?
LateFinals
In todays cockpits there are hundreds of FO's with less than 500 hours total flying time, are they captain material, I think not, being a captain is all about making a lot of decisions based on good old experience.