The 737 300 was FMC, not glass cockpit. The VNAV and LNAV was what we had never seen before. The FMC was the transition, not the glass cockpit which had not happened yet. I was saying it takes time to adapt to new technology. You don't do a two day course and sometime later go out and know what you are doing.
I guess that is why I have no problem going back to 727 mode and flying the clearance manually until the automation agrees with the way we are going. I know what the clearance says, I don,t have time to reprogram at this point. Aviate, navigate, communicate comes to mind when things turn to s**t.