Gentlemen: I guess what I was asking is for examples of situations Captains have witnessed during which the inexperience of a First Officer somehow made the situation less safe. I know everyone has an opinion. Another example would be of a pilot who was hired with extraordinarily low time and even after he/she upgraded was demonstrably less safe. I'll be the first to admit that despite my strong-held opinion about experience levels required, in almost 15000 hours as a Captain, I can't point squarely at ten situations, during which I shared the cockpit with a really low timer and felt really compromised.
One situation I remember (not so much safety related) happened when I commanded a night, CRJ flight from DFW-XNA. Because of a small line of t-storms coming in from the NW, we were filed to Little Rock and then, after a 90 degree left turn, straight to XNA. I hadn't flown with the FO, in part, because he was a new-hire and had just completed IOE. Told me he had 480 hrs. or something like that. Didn't seem to slow him down much: I mean the lad had all the confidence of a Christian with 4 aces. Well, I was the PF, and once we leveled of at 270, up around Hot Springs, I started watching the weather off toward XNA. Even took a turn and a couple sweeps of the radar - didn't look too threatening, so "Ask center for direct XNA". Well 15 minutes later, the whole airplane was glowing blue with st. elmos and we're in honest-to-god moderate turbulence, not to mention the odd lightening flashes out the window. I was thinking 'Gee, I must have impressed the heck out'a this kid with my decision making acumen. Sheepishly, I look over at him. He looks back at me with a great big grin and says "Cool!" Clearly, we were not on the same sheet of music.